Synthesis and Structure of Two Octahedral Molybdenum Chloride Sulfide Clusters PDF Download
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Author: John Byrne Michel
Publisher:
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Category :
Languages : en
Pages : 220
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Author: John Byrne Michel
Publisher:
ISBN:
Category :
Languages : en
Pages : 220
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Author:
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Category :
Languages : en
Pages :
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A preparation for chloride sulfide Mo6X clusters has been devised which employs substitution by sulfide into the Mo6Cl8/sup 4 +/ cluster. The Mo6Cl--S/sup 3 +/ cluster has been isolated in the two compounds (C5H5NH)3((Mo6Cl--S)Cl6) x 3(C5H5NH)Cl and (C5H5NH)3((Mo6Cl--S)Cl6). The structures of both compounds were determined by single crystal x-ray techniques. Despite the different site symmetries of the (Mo6Cl--S)Cl6/sup 3 -/ units in the two compounds (S6 in the former, C/sub i/ in the latter), corresponding average bond distances and angles are equivalent. The infrared spectra (200 to 450 cm−1) of the two compounds are identical, and exhibit a band at 421 cm−1 assigned to a (Mo6Cl--S)Cl6/sup 3 -/ cluster vibration of predominant Mo-S character. Resolution of the chlorine 2p photoelectron spectra into components reveals not only that sulfide occupies a bridging ligand site of the (Mo6Cl--S)Cl6/sup 3 -/ cluster, but also that the difference between the chlorine 2p binding energies of the bridging and terminal chlorides is anomalously small. The Mo6S6Cl2 cluster has been isolated in the novel compound (Mo6S6Cl2)(NC5H5)6. The structure, determined by single crystal x-ray techniques, consists of an approximately cubic Mo6X8 cluster with six terminal pyridine ligands. (Mo6S6Cl2)(NC5H5)6 is the first example of a Mo6X8 cluster with terminal ligands which has fewer that 24 electrons in its metal-metal bonding orbitals. X-ray powder data indicates this compound may be one composition in a molecular solid solution (Mo6S/sub 7-x/Cl/sub 1+x/)(NC5H5)6(0 less than or equal to x less than or equal to 2).
Author: Deborah Ann Spink
Publisher:
ISBN:
Category :
Languages : en
Pages : 152
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Author:
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Category : Power resources
Languages : en
Pages : 1346
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![The Synthesis and Characterization of the Molybdenum-iron-sulfur Clusters [S2MoS2FeL2]2, [S2MoS2FeS2FeL2]3, and [S2MoS2FeS2FeS2MoS2]4 PDF](https://books.google.com/books/content/images/frontcover/-x3bDqAubX8C?fife=w80-h100)
Author: Robert Hugo Tieckelmann
Publisher:
ISBN:
Category : Complex compounds
Languages : en
Pages : 222
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Author: Steven Karl Laughlin
Publisher:
ISBN:
Category :
Languages : en
Pages : 148
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Author: Pierre Villars
Publisher: Walter de Gruyter
ISBN: 3110276658
Category : Science
Languages : en
Pages : 1827
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By browsing about 10 000 000 scientific articles of over 200 major journals mainly in a 'cover to cover approach' some 200 000 publications were selected. The extracted data is part of the following fundamental material research fields: crystal structures (S), phase diagrams (also called constitution) (C) and the comprehensive field of intrinsic physical properties (P). This work has been done systematically starting with the literature going back to 1900. The above mentioned research field codes (S, C, P) as well as the chemical systems investigated in each publication were included in the present work. The aim of the Inorganic Substances Bibliography is to provide researchers with a comprehensive compilation of all up to now published scientific publications on inorganic systems in only three handy volumes.
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Category : Dissertations, Academic
Languages : en
Pages : 560
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Author:
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Category : Dissertation abstracts
Languages : en
Pages : 564
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Author: American Chemical Society. Committee on Professional Training
Publisher:
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Category : Chemical engineering
Languages : en
Pages : 1646
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