Pub Date : 1967-12-01DOI: 10.1107/S0365110X67004359
F. Herbstein, J. D. Wet
{"title":"Determination of the amplitudes of thermal vibration in MnHg at 209°K","authors":"F. Herbstein, J. D. Wet","doi":"10.1107/S0365110X67004359","DOIUrl":"https://doi.org/10.1107/S0365110X67004359","url":null,"abstract":"","PeriodicalId":7001,"journal":{"name":"Acta Crystallographica","volume":"51 1","pages":"1101-1102"},"PeriodicalIF":0.0,"publicationDate":"1967-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76626229","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 : 1967-12-01DOI: 10.1107/S0365110X67004189
M. Vijayan, M. Viswamitra
The structure of magnesium hexa-antipyrine perchlorate, Mg(C 11 H 12 ON 2 ) 6 (ClO 4 ) 2 , has been solved by isomorphous difference-Patterson and trial-and-error methods. The compound crystallizes in the hexagonal system, space group P3, with one formula unit in a unit cell of dimensions a = 14.06, c = 9.76 A. The positional and anistropic thermal parameters of the atoms were refined by the method of least squares to an R value of 0.132 for 1184 observed reflexions. In the structure, the six 3 equivalent antipyrine molecules are coordinated octahedrally to the central Mg 2+ ion through their lone carboxyl oxygen atoms. The pyrazolone and the phenyl rings in the antipyrine group are planar and are inclined to each other by 62.3°. The non-equivalent Cl-O distances in the structure are 1.448 and 1.437 A.
{"title":"The crystal and molecular structure of magnesium hexa‐antipyrine perchlorate","authors":"M. Vijayan, M. Viswamitra","doi":"10.1107/S0365110X67004189","DOIUrl":"https://doi.org/10.1107/S0365110X67004189","url":null,"abstract":"The structure of magnesium hexa-antipyrine perchlorate, Mg(C 11 H 12 ON 2 ) 6 (ClO 4 ) 2 , has been solved by isomorphous difference-Patterson and trial-and-error methods. The compound crystallizes in the hexagonal system, space group P3, with one formula unit in a unit cell of dimensions a = 14.06, c = 9.76 A. The positional and anistropic thermal parameters of the atoms were refined by the method of least squares to an R value of 0.132 for 1184 observed reflexions. In the structure, the six 3 equivalent antipyrine molecules are coordinated octahedrally to the central Mg 2+ ion through their lone carboxyl oxygen atoms. The pyrazolone and the phenyl rings in the antipyrine group are planar and are inclined to each other by 62.3°. The non-equivalent Cl-O distances in the structure are 1.448 and 1.437 A.","PeriodicalId":7001,"journal":{"name":"Acta Crystallographica","volume":"46 1","pages":"1000-1010"},"PeriodicalIF":0.0,"publicationDate":"1967-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85319914","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 : 1967-12-01DOI: 10.1107/S0365110X67004256
J. Silverman, A. Krukonis, N. F. Yannoni
{"title":"The crystal structures of 9‐dicyanomethylenefluorene derivatives. I. 9‐dicyanomethylene‐2,4,7‐trinitrofluorene","authors":"J. Silverman, A. Krukonis, N. F. Yannoni","doi":"10.1107/S0365110X67004256","DOIUrl":"https://doi.org/10.1107/S0365110X67004256","url":null,"abstract":"","PeriodicalId":7001,"journal":{"name":"Acta Crystallographica","volume":"18 1","pages":"1057-1063"},"PeriodicalIF":0.0,"publicationDate":"1967-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90263697","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 : 1967-12-01DOI: 10.1107/S0365110X67004451
M. Cingi, F. Emiliani, C. Guastini
{"title":"Crystal data on some oxoiodates","authors":"M. Cingi, F. Emiliani, C. Guastini","doi":"10.1107/S0365110X67004451","DOIUrl":"https://doi.org/10.1107/S0365110X67004451","url":null,"abstract":"","PeriodicalId":7001,"journal":{"name":"Acta Crystallographica","volume":"25 1","pages":"1114-1114"},"PeriodicalIF":0.0,"publicationDate":"1967-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77666179","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 : 1967-12-01DOI: 10.1107/S0365110X67004402
L. Manojlović-Muir, J. Speakman
{"title":"Structure analysis based on inadequate data – a cautionary tale","authors":"L. Manojlović-Muir, J. Speakman","doi":"10.1107/S0365110X67004402","DOIUrl":"https://doi.org/10.1107/S0365110X67004402","url":null,"abstract":"","PeriodicalId":7001,"journal":{"name":"Acta Crystallographica","volume":"110 1","pages":"1110-1110"},"PeriodicalIF":0.0,"publicationDate":"1967-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89289225","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 : 1967-12-01DOI: 10.1107/S0365110X67004177
F. L. Hirshfeld, D. Rabinovich
{"title":"Structure and electron density of 2,5‐dimethyl‐p‐benzoquinone","authors":"F. L. Hirshfeld, D. Rabinovich","doi":"10.1107/S0365110X67004177","DOIUrl":"https://doi.org/10.1107/S0365110X67004177","url":null,"abstract":"","PeriodicalId":7001,"journal":{"name":"Acta Crystallographica","volume":"10 1","pages":"989-1000"},"PeriodicalIF":0.0,"publicationDate":"1967-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84103370","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 : 1967-12-01DOI: 10.1107/S0365110X67003986
H. Weyerer
{"title":"Diffuse Röntgenreflexe und Ordnungsübergang beim Schmelzpunkt","authors":"H. Weyerer","doi":"10.1107/S0365110X67003986","DOIUrl":"https://doi.org/10.1107/S0365110X67003986","url":null,"abstract":"","PeriodicalId":7001,"journal":{"name":"Acta Crystallographica","volume":"40 1","pages":"886-887"},"PeriodicalIF":0.0,"publicationDate":"1967-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84112048","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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