Pub Date : 1966-11-01DOI: 10.1016/0371-1951(66)80174-1
R.D. Srivastava, G. Prasad
Spectrophotometric studies on the charge transfer interaction of 2,3 dichloro 5,6 dicyano p-benzoquinone with various hydrocarbons have been carried out in chloroform. It has been observed that the frequency of the charge transfer band at its maximum varies almost linearly with the ionization potential of the donor. The singlet—triplet transition of some of hydrocarbons has been bound to be coincident with the charge transfer bands. Charge transfer spectra of all the systems studied are given and from it λmax ϵmax and kc, have been determined.
{"title":"Charge transfer interaction between 2,3 dichloro 5,6 dicyano p-benzoquinone and aromatic hydrocarbons","authors":"R.D. Srivastava, G. Prasad","doi":"10.1016/0371-1951(66)80174-1","DOIUrl":"10.1016/0371-1951(66)80174-1","url":null,"abstract":"<div><p>Spectrophotometric studies on the charge transfer interaction of 2,3 dichloro 5,6 dicyano <em>p</em>-benzoquinone with various hydrocarbons have been carried out in chloroform. It has been observed that the frequency of the charge transfer band at its maximum varies almost linearly with the ionization potential of the donor. The singlet—triplet transition of some of hydrocarbons has been bound to be coincident with the charge transfer bands. Charge transfer spectra of all the systems studied are given and from it λ<sub>max</sub> ϵ<sub>max</sub> and <em>k<sub>c</sub></em>, have been determined.</p></div>","PeriodicalId":101180,"journal":{"name":"Spectrochimica Acta","volume":"22 11","pages":"Pages 1869-1875"},"PeriodicalIF":0.0,"publicationDate":"1966-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0371-1951(66)80174-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88052764","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}
Pub Date : 1966-11-01DOI: 10.1016/0371-1951(66)80187-X
C. Schiele, F.J. Meyer
{"title":"Polyäthylenpresstechnik für die i.r.-Spektroskopie","authors":"C. Schiele, F.J. Meyer","doi":"10.1016/0371-1951(66)80187-X","DOIUrl":"https://doi.org/10.1016/0371-1951(66)80187-X","url":null,"abstract":"","PeriodicalId":101180,"journal":{"name":"Spectrochimica Acta","volume":"22 11","pages":"Pages 1967-1968"},"PeriodicalIF":0.0,"publicationDate":"1966-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0371-1951(66)80187-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89989181","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}
Pub Date : 1966-11-01DOI: 10.1016/0371-1951(66)80172-8
B.F.G. Johnson, R.A. Walton
The infra-red spectra of 15 complexes of dimethylsulphoxide have been recorded in the region 500-265 cm−1. In all cases bands were observed between 400 and 500 cm−1 which are probably associated with the “metal—ligand” stretching vibrations.
{"title":"A far infra-red study of transition metal—dimethylsulphoxide complexes","authors":"B.F.G. Johnson, R.A. Walton","doi":"10.1016/0371-1951(66)80172-8","DOIUrl":"10.1016/0371-1951(66)80172-8","url":null,"abstract":"<div><p>The infra-red spectra of 15 complexes of dimethylsulphoxide have been recorded in the region 500-265 cm<sup>−1</sup>. In all cases bands were observed between 400 and 500 cm<sup>−1</sup> which are probably associated with the “metal—ligand” stretching vibrations.</p></div>","PeriodicalId":101180,"journal":{"name":"Spectrochimica Acta","volume":"22 11","pages":"Pages 1853-1858"},"PeriodicalIF":0.0,"publicationDate":"1966-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0371-1951(66)80172-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79234789","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}
Pub Date : 1966-11-01DOI: 10.1016/0371-1951(66)80176-5
S. Pinchas
The integrated absorption intensity of the CO stretching bands of 99 % 15N-barbituric acid dissolved in dimethylsulphoxide was measured in comparison with that of the CO bands of normal barbituric acid and was found to be practically the same in both cases.
The origin of the different CO bands of barbituric acid is discussed on basis of the observed 15N-isotope shifts of these bands. The assignment of other bands observed for the solution of this acid is suggested.
{"title":"The integrated absorption intensity of the CO stretching bands of normal and 15N-barbituric acid","authors":"S. Pinchas","doi":"10.1016/0371-1951(66)80176-5","DOIUrl":"10.1016/0371-1951(66)80176-5","url":null,"abstract":"<div><p>The integrated absorption intensity of the CO stretching bands of 99 % <sup>15</sup>N-barbituric acid dissolved in dimethylsulphoxide was measured in comparison with that of the CO bands of normal barbituric acid and was found to be practically the same in both cases.</p><p>The origin of the different CO bands of barbituric acid is discussed on basis of the observed <sup>15</sup>N-isotope shifts of these bands. The assignment of other bands observed for the solution of this acid is suggested.</p></div>","PeriodicalId":101180,"journal":{"name":"Spectrochimica Acta","volume":"22 11","pages":"Pages 1889-1895"},"PeriodicalIF":0.0,"publicationDate":"1966-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0371-1951(66)80176-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74404010","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}
Pub Date : 1966-11-01DOI: 10.1016/0371-1951(66)80179-0
R.J. Kline, C.S. Ginsburg, C.H. Oestreich
The infrared spectra of some solid adducts of silver perchlorate and silver nitrate with various metal acetylacetonate chelates are discussed. Systematic frequency shifts and band splittings are interpreted with the help of theoretical assignments and an X-ray structure of one of the adducts. It is suggested that the silver ions form “π-type” complexes with the acetylacetonate ligands but also interact with the carbonyl groups in certain adducts.
{"title":"Infrared spectra of silver ion complexes of metal acetylacetonates","authors":"R.J. Kline, C.S. Ginsburg, C.H. Oestreich","doi":"10.1016/0371-1951(66)80179-0","DOIUrl":"10.1016/0371-1951(66)80179-0","url":null,"abstract":"<div><p>The infrared spectra of some solid adducts of silver perchlorate and silver nitrate with various metal acetylacetonate chelates are discussed. Systematic frequency shifts and band splittings are interpreted with the help of theoretical assignments and an X-ray structure of one of the adducts. It is suggested that the silver ions form “π-type” complexes with the acetylacetonate ligands but also interact with the carbonyl groups in certain adducts.</p></div>","PeriodicalId":101180,"journal":{"name":"Spectrochimica Acta","volume":"22 11","pages":"Pages 1923-1929"},"PeriodicalIF":0.0,"publicationDate":"1966-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0371-1951(66)80179-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86689629","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}
Pub Date : 1966-11-01DOI: 10.1016/0371-1951(66)80181-9
A. Lau, J.H. Hertz
A new Raman scattering device is described, for special use with laser exciting radiation. Its advantages are the use of small quantities of scattering substances (0·08 ml), relative high Raman intensities and simplicity of design.
{"title":"Einfache streuanordnung für laserangeregte ramanstrahlung","authors":"A. Lau, J.H. Hertz","doi":"10.1016/0371-1951(66)80181-9","DOIUrl":"10.1016/0371-1951(66)80181-9","url":null,"abstract":"<div><p>A new Raman scattering device is described, for special use with laser exciting radiation. Its advantages are the use of small quantities of scattering substances (0·08 ml), relative high Raman intensities and simplicity of design.</p></div>","PeriodicalId":101180,"journal":{"name":"Spectrochimica Acta","volume":"22 11","pages":"Pages 1935-1937"},"PeriodicalIF":0.0,"publicationDate":"1966-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0371-1951(66)80181-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75723741","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}
Pub Date : 1966-11-01DOI: 10.1016/0371-1951(66)80178-9
W.T. Thompson, W.H. Fletcher
A valence force field has been derived for hydrazoic acid using the frequencies and centrifugal distortion constants in an iterative computation. The Urey-Bradley force field is inadequate if a fit of the distortion constants is required. The force constants of HN3 have been combined with those of a “standard methyl group” to predict the frequencies of methyl azide. A re-examination of the spectra of CH3N3 and CD3N3 plus the calculations have led to revised assignments of the fundamentals.
{"title":"Force constants of hydrazoic acid and methyl azide","authors":"W.T. Thompson, W.H. Fletcher","doi":"10.1016/0371-1951(66)80178-9","DOIUrl":"10.1016/0371-1951(66)80178-9","url":null,"abstract":"<div><p>A valence force field has been derived for hydrazoic acid using the frequencies and centrifugal distortion constants in an iterative computation. The Urey-Bradley force field is inadequate if a fit of the distortion constants is required. The force constants of HN<sub>3</sub> have been combined with those of a “standard methyl group” to predict the frequencies of methyl azide. A re-examination of the spectra of CH<sub>3</sub>N<sub>3</sub> and CD<sub>3</sub>N<sub>3</sub> plus the calculations have led to revised assignments of the fundamentals.</p></div>","PeriodicalId":101180,"journal":{"name":"Spectrochimica Acta","volume":"22 11","pages":"Pages 1907-1921"},"PeriodicalIF":0.0,"publicationDate":"1966-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0371-1951(66)80178-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82317715","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}
Pub Date : 1966-11-01DOI: 10.1016/0371-1951(66)80180-7
R.C. Leech, D.B. Powell, N. Sheppard
The band shape of the asymmetric CH3 deformation vibration in the infra-red spectrum of Au2I2(CH3)4 has been studied as a Cs I disk at temperatures from 90°K to 298°K. The barrier to internal rotation in the solid state has been calculated by two methods based on those of Bulanin and Orlova, and of Rakov. A mean value of the barrier is estimated as 270 ± 70 cm.−1.
{"title":"Barriers to internal rotation of CH3 groups in solid Au2I2(CH3)4 from infra-red band shape measurements","authors":"R.C. Leech, D.B. Powell, N. Sheppard","doi":"10.1016/0371-1951(66)80180-7","DOIUrl":"10.1016/0371-1951(66)80180-7","url":null,"abstract":"<div><p>The band shape of the asymmetric CH<sub>3</sub> deformation vibration in the infra-red spectrum of Au<sub>2</sub>I<sub>2</sub>(CH<sub>3</sub>)<sub>4</sub> has been studied as a Cs I disk at temperatures from 90°K to 298°K. The barrier to internal rotation in the solid state has been calculated by two methods based on those of B<span>ulanin</span> and O<span>rlova</span>, and of R<span>akov</span>. A mean value of the barrier is estimated as 270 ± 70 cm.<sup>−1</sup>.</p></div>","PeriodicalId":101180,"journal":{"name":"Spectrochimica Acta","volume":"22 11","pages":"Pages 1931-1933"},"PeriodicalIF":0.0,"publicationDate":"1966-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0371-1951(66)80180-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88865928","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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