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- W2022681134 abstract "Measurement of the T 1 values of the 31 P nuclei in the unusual capped trigonal bipyramidal complexes WH(tipt) 3 (PMe 2 Ph) 2 (1, tipt = SC 6 H 2 Pr i 3 -2,4,6) and W( 2 H)(tipt) 3 (PMe 2 Ph) 2 allows the determination of the phosphorus–hydride distance of 2.2 ± 0.2 Å and the P-W-H angle of about 62 ± 7°. An approximate location of the hydride on an S 2 P face is proposed on the basis of steric interactions. The crystal structure of WH(tipt) 3 -(NC 5 H 5 )(PMe 2 Ph) (2) is reported; the WS 3 NP core consists of a distorted trigonal bipyramidal system with the phosphine and pyridine ligands axial and the thiolate ligands equatorial. The hydride ligand was not located by X-ray diffraction but can be positioned on an open S 2 P face at an angle P-W-H of about 65°. The small P-W-H angle results in large 2 J(H,P) couplings for 1 and 2. The 1 H NMR spectrum of complex 2 is assigned by use of NOE and homodecoupling NMR methods. This complex has the same crowded structure in solution as in the crystalline state. The pyridine ligand, which is sandwiched between two tipt aryl groups, is hindered from rotating around the W—N bond. Keywords: molybdenum, tungsten, thiolate, hydride, NMR, NOE." @default.
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- W2022681134 date "1995-07-01" @default.
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- W2022681134 title "Elucidation of the structures of the hydridothiolato complexes WH(SC<sub>6</sub>H<sub>2</sub>Pr<sup>i</sup><sub>3</sub>-2,4,6)<sub>3</sub>(L)(PMe<sub>2</sub>Ph), L = PMe<sub>2</sub>Ph or pyridine, by NMR and X-ray techniques" @default.
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- W2022681134 doi "https://doi.org/10.1139/v95-135" @default.
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