M. Shakir, Hamida-Tun-Nisa Chishti, Y. Azim, Nishat Begum
Abstract A novel family of hexaazamacrocyclic complexes [MLX2] [M = Co(II), Ni(II), Cu(II), and Zn(II), X = Cl or NO3] containing pyridine and imine groups as part of the macrocyclic framework have been synthesized by the condensation of o‐phthalaldehyde with 2,6‐diaminopyridine in the presence of metal ions as templates in methanol as solvent. The complexes have been characterized on the basis of elemental analyses, IR, 1H NMR, EPR, UV‐Visible, magnetic susceptibility, and conductivity measurements at room temperature. An octahedral geometry has been proposed for all of these complexes. The low conductivity data suggest their non‐ionic nature.
{"title":"Synthesis and Characterization of Hexaazamacrocyclic Complexes with Co(II), Ni(II), Cu(II), and Zn(II) Derived from Phthalaldehyde and 2,6‐Diaminopyridine","authors":"M. Shakir, Hamida-Tun-Nisa Chishti, Y. Azim, Nishat Begum","doi":"10.1081/SIM-120035959","DOIUrl":"https://doi.org/10.1081/SIM-120035959","url":null,"abstract":"Abstract A novel family of hexaazamacrocyclic complexes [MLX2] [M = Co(II), Ni(II), Cu(II), and Zn(II), X = Cl or NO3] containing pyridine and imine groups as part of the macrocyclic framework have been synthesized by the condensation of o‐phthalaldehyde with 2,6‐diaminopyridine in the presence of metal ions as templates in methanol as solvent. The complexes have been characterized on the basis of elemental analyses, IR, 1H NMR, EPR, UV‐Visible, magnetic susceptibility, and conductivity measurements at room temperature. An octahedral geometry has been proposed for all of these complexes. The low conductivity data suggest their non‐ionic nature.","PeriodicalId":22160,"journal":{"name":"Synthesis and Reactivity in Inorganic and Metal-organic Chemistry","volume":"90 1","pages":"809 - 818"},"PeriodicalIF":0.0,"publicationDate":"2004-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83926796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract The complexes of two new ligands, 2‐acetylnaphtho[2,1‐b]furan oxime (L1) and 2‐benzoylnaphtho[2,1‐b]furan oxime (L2), with the metal ions Cu(II), Ni(II), Co(II), Cd(II), and Hg(II) have been synthesized and characterized on the basis of elemental analyses, conductance, magnetic susceptibility measurements, TGA, powder x‐ray diffraction, NMR, UV‐electronic, and IR spectral studies. Coordination of the ligand atoms to the metal ion was deduced by NMR and IR spectral data. Magnetic studies revealed the structures of the complexes. The stability of the complexes was studied by thermal analysis. Powder x‐ray diffraction studies of the complexes have shown that they are crystalline in nature. All the complexes, ligands and metal salts have been screened for antimicrobial, anthelmintic, and analgesic activities.
{"title":"Comparative Studies on Metal Complexes of 2‐Acetylnaphtho[2,1‐b]furan Oxime and 2‐Benzoylnaphtho[2,1‐b]furan Oxime","authors":"K. Latha, V. Vaidya, J. Keshavayya","doi":"10.1081/SIM-120035949","DOIUrl":"https://doi.org/10.1081/SIM-120035949","url":null,"abstract":"Abstract The complexes of two new ligands, 2‐acetylnaphtho[2,1‐b]furan oxime (L1) and 2‐benzoylnaphtho[2,1‐b]furan oxime (L2), with the metal ions Cu(II), Ni(II), Co(II), Cd(II), and Hg(II) have been synthesized and characterized on the basis of elemental analyses, conductance, magnetic susceptibility measurements, TGA, powder x‐ray diffraction, NMR, UV‐electronic, and IR spectral studies. Coordination of the ligand atoms to the metal ion was deduced by NMR and IR spectral data. Magnetic studies revealed the structures of the complexes. The stability of the complexes was studied by thermal analysis. Powder x‐ray diffraction studies of the complexes have shown that they are crystalline in nature. All the complexes, ligands and metal salts have been screened for antimicrobial, anthelmintic, and analgesic activities.","PeriodicalId":22160,"journal":{"name":"Synthesis and Reactivity in Inorganic and Metal-organic Chemistry","volume":"3 1","pages":"667 - 686"},"PeriodicalIF":0.0,"publicationDate":"2004-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89470873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
K. Siddiqi, Hina Afaq, A. Umar, Shahab A. A. Nami, R. Singh
Abstract Complexes of SnCl2 · py with MCl2, where M = Mn(II), Fe(II), Co(II), Ni(II), and Cu(II), have been prepared and characterized by the elemental analysis, TGA, DTA, EPR, and IR spectra. All the compounds prepared are stable at room temperature but they are hygroscopic in nature. Substitution reactions of SnCl2 · py(MCl2) by dithiocarbamate afforded (SnCl2 · py)2M(dtc)2. An octahedral geometry for the metal dithiocarbamates has been proposed.
{"title":"Reaction of Sn(II) Adduct with MCl2 [M = Mn(II), Fe(II), Co(II), Ni(II), and Cu(II)]","authors":"K. Siddiqi, Hina Afaq, A. Umar, Shahab A. A. Nami, R. Singh","doi":"10.1081/SIM-120035956","DOIUrl":"https://doi.org/10.1081/SIM-120035956","url":null,"abstract":"Abstract Complexes of SnCl2 · py with MCl2, where M = Mn(II), Fe(II), Co(II), Ni(II), and Cu(II), have been prepared and characterized by the elemental analysis, TGA, DTA, EPR, and IR spectra. All the compounds prepared are stable at room temperature but they are hygroscopic in nature. Substitution reactions of SnCl2 · py(MCl2) by dithiocarbamate afforded (SnCl2 · py)2M(dtc)2. An octahedral geometry for the metal dithiocarbamates has been proposed.","PeriodicalId":22160,"journal":{"name":"Synthesis and Reactivity in Inorganic and Metal-organic Chemistry","volume":"32 1","pages":"775 - 784"},"PeriodicalIF":0.0,"publicationDate":"2004-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80244428","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Mixed‐ligand complexes of the types [Ni(Etdtcn)(BH)], [Ni(Budtcn) (BeBH)], and [M(Rdtcn)(salBH)], where M = Co(II), Ni(II), or Cu(II); R = methyl (Me), ethyl (Et), propyl (Prop) or butyl of the dithiocarbonate (Bu); dtcn = dithiocarbonate group; BH = benzoyl‐hydrazine anion, BeBH = benzaldehyde benzoylhydrazone anion, and salBH = salicylaldehyde benzoylhydrazone anion have been synthesised. Elemental analyses, molar conductivities, and spectral (IR, UV, and mass) studies have been used to elucidate the structure of the metal complexes. HBH and HBeBH coordinate in the enol form as bidentate ligands forming a square‐planar structure around Ni(II). Moreover, the HsalBH ligand behaves as tridentate anion with all metal ions and an octahedral structure for these complexes is proposed. The three ligands and some of their complexes were screened against three species of bacteria, namely B. cereus (G +ve), P. aeruginosa (G −ve), and S. aureus (G +ve) and five types of fungi, A. flavus, A. fumigatus var. albus, A. niger, F. oxysporum or C. tropicum. The HsalBH ligand has shown high activity against bacteria and fungi, probably due to the presence of a hydroxyl group in this ligand.
{"title":"Synthesis and Investigation of Mixed‐Ligand Transition Metal Complexes of Alkyl Dithiocarbonate and Benzoylhydrazine or Benzoylhydrazone Derivatives","authors":"A. S. Zidan","doi":"10.1081/SIM-120035954","DOIUrl":"https://doi.org/10.1081/SIM-120035954","url":null,"abstract":"Abstract Mixed‐ligand complexes of the types [Ni(Etdtcn)(BH)], [Ni(Budtcn) (BeBH)], and [M(Rdtcn)(salBH)], where M = Co(II), Ni(II), or Cu(II); R = methyl (Me), ethyl (Et), propyl (Prop) or butyl of the dithiocarbonate (Bu); dtcn = dithiocarbonate group; BH = benzoyl‐hydrazine anion, BeBH = benzaldehyde benzoylhydrazone anion, and salBH = salicylaldehyde benzoylhydrazone anion have been synthesised. Elemental analyses, molar conductivities, and spectral (IR, UV, and mass) studies have been used to elucidate the structure of the metal complexes. HBH and HBeBH coordinate in the enol form as bidentate ligands forming a square‐planar structure around Ni(II). Moreover, the HsalBH ligand behaves as tridentate anion with all metal ions and an octahedral structure for these complexes is proposed. The three ligands and some of their complexes were screened against three species of bacteria, namely B. cereus (G +ve), P. aeruginosa (G −ve), and S. aureus (G +ve) and five types of fungi, A. flavus, A. fumigatus var. albus, A. niger, F. oxysporum or C. tropicum. The HsalBH ligand has shown high activity against bacteria and fungi, probably due to the presence of a hydroxyl group in this ligand.","PeriodicalId":22160,"journal":{"name":"Synthesis and Reactivity in Inorganic and Metal-organic Chemistry","volume":"4 1","pages":"743 - 762"},"PeriodicalIF":0.0,"publicationDate":"2004-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79848712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Heterotrinuclear complexes of the type [Cu(ppn)2Cl2{Ti(Cp)2}2] and [Cu(en)2(NO3)2{Ti(Cp)2}2] have been synthesized and characterized by elemental analyses, IR, electronic, EPR, and 1H NMR spectra, magnetic moments, and conductivity measurements. The results indicate that the trinuclear complexes are covalent with an octahedral environment around the copper(II) ion, while its mononuclear analogues, [Cu(ppn‐H2)2]Cl2 and [Cu(en‐H2)2](NO3)2, are square‐planar and ionic in nature.
{"title":"Synthesis and Characterization of Trinuclear Complexes Containing Cu(II) and Ti(IV)","authors":"F. Rafat, K. Siddiqi, Lutfullah","doi":"10.1081/SIM-120035955","DOIUrl":"https://doi.org/10.1081/SIM-120035955","url":null,"abstract":"Abstract Heterotrinuclear complexes of the type [Cu(ppn)2Cl2{Ti(Cp)2}2] and [Cu(en)2(NO3)2{Ti(Cp)2}2] have been synthesized and characterized by elemental analyses, IR, electronic, EPR, and 1H NMR spectra, magnetic moments, and conductivity measurements. The results indicate that the trinuclear complexes are covalent with an octahedral environment around the copper(II) ion, while its mononuclear analogues, [Cu(ppn‐H2)2]Cl2 and [Cu(en‐H2)2](NO3)2, are square‐planar and ionic in nature.","PeriodicalId":22160,"journal":{"name":"Synthesis and Reactivity in Inorganic and Metal-organic Chemistry","volume":"343 1","pages":"763 - 774"},"PeriodicalIF":0.0,"publicationDate":"2004-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76410096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
K. Sakata, Takashi Yamamoto, M. Hashimoto, Xuan Shen, A. Tsuge, H. Kuma
Abstract Yttrium(III), lanthanum(III), and holmium(III) complexes with tris‐(salicylideneamino)triethylenetetramine have been synthesized and characterized by elemental and spectral analyses as well as x‐ray crystal diffraction. The FAB and TOF (time‐of‐flight) mass spectra reveal that the ligand acts as a heptadentate and that the metal versus ligand stoichiometry is 2:2. The structure of the lanthanum(III) complex has been determined by x‐ray single crystal diffraction. The lanthanum(III) ion is coordinated through the four nitrogen and the four oxygen atoms of the two ligands to form an eight‐coordinate configuration. The two lanthanum(III) ions are bridged by the two phenolate oxygen atoms in the complex. The structure is similar to that of the ligand containing p‐bromo substituents. The proton NMR spectra also show that the lanthanum(III) complex is a dimer.
{"title":"Synthesis and Characterization of Yttrium(III), Lanthanum(III), and Holmium(III) Complexes with a Heptadentate Schiff Base Ligand","authors":"K. Sakata, Takashi Yamamoto, M. Hashimoto, Xuan Shen, A. Tsuge, H. Kuma","doi":"10.1081/SIM-120035947","DOIUrl":"https://doi.org/10.1081/SIM-120035947","url":null,"abstract":"Abstract Yttrium(III), lanthanum(III), and holmium(III) complexes with tris‐(salicylideneamino)triethylenetetramine have been synthesized and characterized by elemental and spectral analyses as well as x‐ray crystal diffraction. The FAB and TOF (time‐of‐flight) mass spectra reveal that the ligand acts as a heptadentate and that the metal versus ligand stoichiometry is 2:2. The structure of the lanthanum(III) complex has been determined by x‐ray single crystal diffraction. The lanthanum(III) ion is coordinated through the four nitrogen and the four oxygen atoms of the two ligands to form an eight‐coordinate configuration. The two lanthanum(III) ions are bridged by the two phenolate oxygen atoms in the complex. The structure is similar to that of the ligand containing p‐bromo substituents. The proton NMR spectra also show that the lanthanum(III) complex is a dimer.","PeriodicalId":22160,"journal":{"name":"Synthesis and Reactivity in Inorganic and Metal-organic Chemistry","volume":"11 1","pages":"641 - 651"},"PeriodicalIF":0.0,"publicationDate":"2004-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81528372","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
I. Kizilcikli,, B. Ülküseven, Y. Daşdemir, B. Akkurt
Abstract Representative S‐methyl/ethyl‐4‐H/phenylthiosemicarbazones and their Zn(II) and Pd(II) complexes were synthesized. Characterization of the 1:1 complexes, [Zn(L)Cl2], [Pd(L)Cl2], and [Pd(L)Cl]Cl, was accomplished by means of elemental analyses, IR and 1H NMR spectra. The multidentate S‐alkyl thiosemicarbazones coordinate as mono‐, bi‐, or tridentate ligands depending on the types of the alkyl moiety and metal ion.
{"title":"Zn(II) and Pd(II) Complexes of Thiosemicarbazone‐S‐alkyl Esters Derived from 2/3‐Formylpyridine","authors":"I. Kizilcikli,, B. Ülküseven, Y. Daşdemir, B. Akkurt","doi":"10.1081/SIM-120035948","DOIUrl":"https://doi.org/10.1081/SIM-120035948","url":null,"abstract":"Abstract Representative S‐methyl/ethyl‐4‐H/phenylthiosemicarbazones and their Zn(II) and Pd(II) complexes were synthesized. Characterization of the 1:1 complexes, [Zn(L)Cl2], [Pd(L)Cl2], and [Pd(L)Cl]Cl, was accomplished by means of elemental analyses, IR and 1H NMR spectra. The multidentate S‐alkyl thiosemicarbazones coordinate as mono‐, bi‐, or tridentate ligands depending on the types of the alkyl moiety and metal ion.","PeriodicalId":22160,"journal":{"name":"Synthesis and Reactivity in Inorganic and Metal-organic Chemistry","volume":"3 1","pages":"653 - 665"},"PeriodicalIF":0.0,"publicationDate":"2004-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82563357","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract The template synthesis of diacetyl or benzil and 1‐amino‐5‐benzoyl‐4‐phenyl‐1H‐pyrimidine‐2‐one in the presence of Fe(III) and Cr(III) results in the formation of acyclic complexes of the types [ML1X2]X, [ML2X2]X, and [Fe2(L1)2Cl4]Cl2 · H2O, where M = Fe(III), Cr(III), L1 (benzyl derivative), or L2 (diacetyl derivative) are N2O2/ONO acyclic ligands and X = Cl, NO3). The complexes have been characterized by elemental analyses, molar conductance, magnetic measurements, IR, and UV/VIS spectral studies.
{"title":"Template Synthesis of Fe(III) and Cr(III) Acyclic Complexes Derived from Diacetyl or Benzil and 1‐Amino‐5‐benzoyl‐4‐phenyl‐1H‐pyrimidine‐2‐one","authors":"M. Sönmez","doi":"10.1081/SIM-120035953","DOIUrl":"https://doi.org/10.1081/SIM-120035953","url":null,"abstract":"Abstract The template synthesis of diacetyl or benzil and 1‐amino‐5‐benzoyl‐4‐phenyl‐1H‐pyrimidine‐2‐one in the presence of Fe(III) and Cr(III) results in the formation of acyclic complexes of the types [ML1X2]X, [ML2X2]X, and [Fe2(L1)2Cl4]Cl2 · H2O, where M = Fe(III), Cr(III), L1 (benzyl derivative), or L2 (diacetyl derivative) are N2O2/ONO acyclic ligands and X = Cl, NO3). The complexes have been characterized by elemental analyses, molar conductance, magnetic measurements, IR, and UV/VIS spectral studies.","PeriodicalId":22160,"journal":{"name":"Synthesis and Reactivity in Inorganic and Metal-organic Chemistry","volume":"45 1","pages":"733 - 741"},"PeriodicalIF":0.0,"publicationDate":"2004-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77987106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract A new unsymmetrical tetradentate Schiff base ligand (H2L) was synthesized using 5‐chloro‐2‐hydroxybenzophenone, o‐phenylenediamine, and salicylaldehyde. Five metal complexes of this ligand, [ML] · xH2O (M = Cu(II), Ni(II), Zn(II), Mn(II), and Co(II); x = 0–3), have been prepared and characterized by elemental analyses, IR spectra, UV spectra, and molar conductance. Possible structures of these complexes have been proposed.
{"title":"Synthesis and Characterization of Metal Complexes with Unsymmetrical Tetradentate Schiff Base Ligand","authors":"C. Bi, Yu-hua Fan","doi":"10.1081/SIM-120035950","DOIUrl":"https://doi.org/10.1081/SIM-120035950","url":null,"abstract":"Abstract A new unsymmetrical tetradentate Schiff base ligand (H2L) was synthesized using 5‐chloro‐2‐hydroxybenzophenone, o‐phenylenediamine, and salicylaldehyde. Five metal complexes of this ligand, [ML] · xH2O (M = Cu(II), Ni(II), Zn(II), Mn(II), and Co(II); x = 0–3), have been prepared and characterized by elemental analyses, IR spectra, UV spectra, and molar conductance. Possible structures of these complexes have been proposed.","PeriodicalId":22160,"journal":{"name":"Synthesis and Reactivity in Inorganic and Metal-organic Chemistry","volume":"102 1","pages":"687 - 695"},"PeriodicalIF":0.0,"publicationDate":"2004-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90309848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Eight new tetradentate bisketimino derivatives of 4‐acetyl‐3‐methyl‐1‐phenyl‐2‐pyrazolin‐5‐one (APMP) and 4‐acetyl‐3‐methyl‐1‐(3′‐chlorophenyl)‐2‐pyrazolin‐5‐one (ACMP) with ethylenediamine (en), o‐, m‐, and p‐phenylenediamines were prepared. The Ni(II) chelates of these Schiff base ligands were prepared and characterized on the basis of elemental analyses, infrared, conductivity measurements, magnetic susceptibilities, vapour pressure osmometry (VPO), TGA, and electronic spectral studies. The studies show that the central metal ion is coordinated to two imino nitrogens and two oxygens donor sites of the ligands. Probable structures have been suggested for these chelates based on the available evidence.
{"title":"Synthesis and Physico‐chemical Studies on Nickel(II) Chelates of Some Tetradentate Bisketimino Derivatives of 4‐Acyl‐2‐pyrazolin‐5‐ones","authors":"D. S. Raj, N. Parmar, J. R. Shah","doi":"10.1081/SIM-120035951","DOIUrl":"https://doi.org/10.1081/SIM-120035951","url":null,"abstract":"Abstract Eight new tetradentate bisketimino derivatives of 4‐acetyl‐3‐methyl‐1‐phenyl‐2‐pyrazolin‐5‐one (APMP) and 4‐acetyl‐3‐methyl‐1‐(3′‐chlorophenyl)‐2‐pyrazolin‐5‐one (ACMP) with ethylenediamine (en), o‐, m‐, and p‐phenylenediamines were prepared. The Ni(II) chelates of these Schiff base ligands were prepared and characterized on the basis of elemental analyses, infrared, conductivity measurements, magnetic susceptibilities, vapour pressure osmometry (VPO), TGA, and electronic spectral studies. The studies show that the central metal ion is coordinated to two imino nitrogens and two oxygens donor sites of the ligands. Probable structures have been suggested for these chelates based on the available evidence.","PeriodicalId":22160,"journal":{"name":"Synthesis and Reactivity in Inorganic and Metal-organic Chemistry","volume":"116 1","pages":"697 - 711"},"PeriodicalIF":0.0,"publicationDate":"2004-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78244117","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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