NDLI: Crystal and molecular structures of Mo2Cl4(PMePh2)4 and Re2Cl4(PMePh2)4

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Synthesis, crystal structure and electrical conductivity of a new layered ternary telluride Ta₄Pd₃Te₁₆

Kinetic and mechanistic studies of the gas-phase thermolysis of hexaborane(12), and of its cothermolysis with other binary boranes and with CO, BH₃·CO and H₂

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High-pressure spectroscopic studies of reactions of the clusters [Rh₄(CO)_12–x{P(OPh)₃}_x](x= 1–4) with carbon monoxide or syngas

Dynamic binuclear enediolato- and catecholato-zirconocene complexes relevant to the structural problem associated with sharpless oxidation catalysts

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Chromium(III) complexes of 1,4,8,12-tetraazacyclopentadecane

Oxoniobates with 13 and 15 electrons in [Nb₆O₁₂] clusters: the structures of KNb₈O₁₄ and LaNb₈O₁₄

Photochemistry of [M(η⁵-C₅H₅)(CO)₃Et](M = Mo or W): a mechanistic study using time-resolved infrared spectroscopy and matrix isolation

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Photophysical properties of polypyridyl carbonyl complexes of rhenium(I)

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The symmetrical octasilasesquioxanes X₈Si₈O₁₂: electronic structure and reactivity

Hexakis(tert-butyldimethylsiloxy)ditungsten and its reaction with ethyne. Hydrogen atom transfer reactions involving bridging ethynyl, ethyne, vinyl and ethylidyne ligands. Crystal structures of [W₂(OSiBu^tMe₂)₆], [W₂(OSiBu^tMe₂)₆(µ-C₂H₂)(C₅H₅N)] and [W₂(OSiBu^tMe₂)₅(µ-CCH)]

Bis(trimethylsilyl)phosphido complexes. Part 3. Syntheses, structures and reactions of [bis(trimethylsilyl)phosphido]-zirconocene(IV) complexes and the X-ray structure of {AlMe₂[µ-P(SiMe₃)₂]}₂

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Journal of the Chemical Society, Dalton Transactions Vol - 0 Issue - 4

Crystal and molecular structures of Mo₂Cl₄(PMePh₂)₄ and Re₂Cl₄(PMePh₂)₄

Content Provider	Royal Society of Chemistry (RSC)
Author	Luck, Rudy L. Cotton, F. Albert Czuchajowska, Joanna
Copyright Year	1991
Abstract	The dropwise addition of SiMe3Cl to a stirred suspension of Mo2(O2CMe)4 and PMePh2 in CH2Cl2 results in the formation of the quadruply bonded dimolybdenum complex Mo2Cl4(PMePh2)41. The triply bonded complex Re2Cl4(PMePh2)42 was synthesised by reaction of PMePh2[NBu4]2[Re2Cl8], and NaBH4 in a MeOH–EtOH slurry and by direct reduction of ReCl5 with Na/Hg in the presence of PMePh2. The crystal structures of Mo2Cl4(PMePh2)4·C6H51a, Re2Cl4(PMePh2)4·C6H62a and Re2Cl4(PMePh2)4·Me2CO 2b have been determined. The complexes were also characterized by 1H and 31P-{1H} NMR spectroscopy. The M2Cl4(PMePh2)4 molecules have qualitatively the same structure in all three cases, with effective S4() symmetry. In 1a the MoMo distance is 2.135(1)Å and for 2a and 2b the ReRe distances for the two structural determinations average to 2.257 Å. It is shown that in addition to the observed structures of 1 and 2 there are three enantiomeric pairs of isomers obtainable by different combinations of rotations of the PMePh2 ligands about the M–P bonds, all of which are of higher energy. It is suggested that the unstable green isomer of 1 has one of these structures.
Starting Page	579
Ending Page	585
Page Count	7
File Format	PDF
ISSN	1470479X
Volume Number	0
Issue Number	S
Journal	Journal of the Chemical Society, Dalton Transactions
DOI	10.1039/DT9910000579
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Rhenium pentachloride Nuclear magnetic resonance spectroscopy Sodium borohydride Isomer
Content Type	Text
Resource Type	Article
Subject	Chemistry

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