ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPressure-induced spin-state crossovers in six-coordinate cobalt(II) complexes: a near-edge x-ray absorption studyC. Roux, J. Zarembowitch, J. P. Itie, M. Verdaguer, E. Dartyge, A. Fontaine, and H. TolentinoCite this: Inorg. Chem. 1991, 30, 16, 3174–3179Publication Date (Print):August 1, 1991Publication History Published online1 May 2002Published inissue 1 August 1991https://doi.org/10.1021/ic00016a014RIGHTS & PERMISSIONSArticle Views280Altmetric-Citations31LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit PDF (691 KB) Get e-Alerts Get e-Alerts
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSymmetry of the magnetic orbitals and exchange interaction in copper iron (CuIIFeIII) and copper chromium (CuIICrIII) heterobinuclear complexes. Crystal structure of CuFe[(fsa)2en]Cl(H2O)(CH3OH).CH3OHYves Journaux, Olivier Kahn, Jacqueline Zarembowitch, Jean Galy, and Joel JaudCite this: J. Am. Chem. Soc. 1983, 105, 26, 7585–7591Publication Date (Print):December 1, 1983Publication History Published online1 May 2002Published inissue 1 December 1983https://pubs.acs.org/doi/10.1021/ja00364a021https://doi.org/10.1021/ja00364a021research-articleACS PublicationsRequest reuse permissionsArticle Views374Altmetric-Citations81LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-AlertscloseSupporting Info (1)»Supporting Information Supporting Information Get e-Alerts
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCharacteristic properties of high- and low-spin-state five-coordinate .sigma.-bonded aryl-, alkyl-, and perfluoroaryliron(III) porphyrins: proton NMR, ESR, Moessbauer, and magnetic studiesA. Tabard, P. Cocolios, G. Lagrange, R. Gerardin, J. Hubsch, C. Lecomte, J. Zarembowitch, and R. GuilardCite this: Inorg. Chem. 1988, 27, 1, 110–117Publication Date (Print):January 1, 1988Publication History Published online1 May 2002Published inissue 1 January 1988https://pubs.acs.org/doi/10.1021/ic00274a024https://doi.org/10.1021/ic00274a024research-articleACS PublicationsRequest reuse permissionsArticle Views198Altmetric-Citations25LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts
L'objet de ce travail est de montrer les relations qui existent entre les spectres infrarouges et les structures de composés de coordination mono et dipyrazinés de l'iridium, tripyrazinés de l'iridium et du rhodium.
Nous présentons les spectres d'absorption des rayons X de complexes moléculaires du cobalt au seuil K. Nous commentons l'influence sur le seuil de divers paramètres structuraux et électroniques : coordinence, degré d'oxydation et état de spin du métal, stéréochimie, distances absorbant-voisins, nature des ligands, etc.... Certains des complexes étudiés sont d'intérêt biologique. La partie du spectre relative aux états liés est interprétée en termes d'orbitales moléculaires, en mettant l'accent sur la symétrie des systèmes. Nous utilisons le dispositif d'absorption en mode dispersif pour étudier la déshydratation d'un complexe du cobalt(II) en fonction du temps.
A simple model of force constants allowed us to forecast that structural phase transitions due to $M{\mathrm{F}}_{6}$ octahedra rotations may occur in the fluoperovskites $\mathrm{AM}{\mathrm{F}}_{3}$ containing $M$ ions large enough to determine the dimensions of the cell and leave the $A$ ions free to move from the octahedra. Thus we focused our attention on $A\mathrm{Cd}{\mathrm{F}}_{3}$ compounds. We successfully prepared large single crystals of RbCd${\mathrm{F}}_{3}$, TlCd${\mathrm{F}}_{3}$, and CsCd${\mathrm{F}}_{3}$ by the Bridgman-Stockbarger method. These crystals have the cubic perovskite structure at room temperature. The x-ray experiments show that a tetragonal distortion with $\frac{c}{a}>1$ occurs at 124 K in RbCd${\mathrm{F}}_{3}$ and 191 K in TlCd${\mathrm{F}}_{3}$. For CsCd${\mathrm{F}}_{3}$, no distortion was observed between 4 and 300 K. The occurence of a phase transition in RbCd${\mathrm{F}}_{3}$ and TlCd${\mathrm{F}}_{3}$ has been confirmed by the study of elastic wave velocities as a function of temperature. The anomalous decreasing of the elastic constant ${C}_{44}$ with decreasing temperature is consistent with slight rotations of Cd${\mathrm{F}}_{6}$ octahedra. The study of both superstructure reflexions and Raman-scattering spectrum allows us to retain the space group ${D}_{4h}^{ 18}$ for the low-temperature phase. Two low-frequency modes show a behavior of soft modes very similar to that already observed in SrTi${\mathrm{O}}_{3}$ and KMn${\mathrm{F}}_{3}$.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTwo-step spin crossover in the new dinuclear compound [Fe(bt)(NCS)2]2bpym, with bt = 2,2'-bi-2-thiazoline and bpym = 2,2'-bipyrimidine: experimental investigation and theoretical approachJose Antonio Real, Helene Bolvin, Azzedine Bousseksou, Ary Dworkin, Olivier Kahn, Francois Varret, and Jacqueline ZarembowitchCite this: J. Am. Chem. Soc. 1992, 114, 12, 4650–4658Publication Date (Print):June 1, 1992Publication History Published online1 May 2002Published inissue 1 June 1992https://pubs.acs.org/doi/10.1021/ja00038a031https://doi.org/10.1021/ja00038a031research-articleACS PublicationsRequest reuse permissionsArticle Views1300Altmetric-Citations269LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts
Nous étudions le spectre infrarouge de l’histamine solide en prenant comme élément de comparaison le spectre de l’imidazole dont nous discutons les interprétations données par différents auteurs.
