2006
DOI: 10.1002/ejic.200500698
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Structural, Electrochemical, and Theoretical Investigations of New Thio‐ and Selenoether Complexes of Molybdenum and Tungsten

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Cited by 20 publications
(28 citation statements)
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“…[20] This is typical of other series of MO 2 X 2 compounds, e.g. [MO 2 X 2 (OPR 3 ) 2 ] M = Mo or W, [23] although the difference is less in the phosphane oxide complexes. The higher frequency ν(M=O] for W is consistent with stronger metal-oxido bonds.…”
Section: Introductionmentioning
confidence: 96%
See 1 more Smart Citation
“…[20] This is typical of other series of MO 2 X 2 compounds, e.g. [MO 2 X 2 (OPR 3 ) 2 ] M = Mo or W, [23] although the difference is less in the phosphane oxide complexes. The higher frequency ν(M=O] for W is consistent with stronger metal-oxido bonds.…”
Section: Introductionmentioning
confidence: 96%
“…While the crystal structure of the distorted octahedral species was reported, no solution spectroscopic data were presented. [23] We have also investigated this reaction and in our hands it www.eurjic.orgreproducibly leads to formation of a white solid which was very poorly soluble. While weak ν(W=O) and ν(W-Cl) bands consistent with the literature data were evident in the IR spectra of these products, strong, broad absorptions around 600-700 cm -1 were also evident, which are indicative of polymeric WO 2 The very poor yields from these tungsten reactions prompted further efforts to avoid formation of the insoluble by-products.…”
Section: Introductionmentioning
confidence: 98%
“…Figure1shows the molecular structure of complex 2 and selected bond lengths and angles are summarized in Table1along with those of complex 1. The structure of 2 exhibits a slightly distorted octahedral coordination around the molybdenum atom, which is similar to 1[5]. The Mo-S bond length (2.710 (1) Å ) in 2 is in the range of 2.45-2.77 Å which is the usual distance between the metal (molybdenum or tungsten) and sulfur atoms of a thioether ligand[11].…”
mentioning
confidence: 99%
“…It was therefore decided to turn to model compounds that are not really structural models for the active sites, though all donor atoms are from the chalcogenides that are already binuclear (to avoid generation of the notorious M-O-M core), that are not too reactive (so that they are stable enough to survive several catalytic turnovers and last a reasonable time) and that contain the donor atoms of interest as -ether (-C-X-C-) or -one (-C=X) type function (to avoid redox reactions between ligand and metal; X = S, Se). [20][21][22][23] All used compounds were rather slow catalysts, but they were absolutely stable at catalytic conditions and processed 100 % of the lower concentrated substrate (PPh 3 ; DMSO was added in excess, see the catalytic procedure described above). For all used pairs of complexes, the studies showed that, despite nearly identical structural and electrochemical properties the catalytic activity was always different for sulfur-and selenium-based ligands, though for some complexes the Se compounds were better catalysts and for others it was vice versa.…”
Section: Amino Acid Coordinationmentioning
confidence: 99%