The P-31 CP/MAS NMR spectra from powder samples and the P-31 and Co-59 solution NMR spectra of [RCo(DH)(2)PPh3] (R = Me, n-Pr, CH2Ph, CH2Cl, CH2CF3, Ph, i-Pr) are reported. Due to coupling to Co-59 (I = 7/2), the P-31 CP/MAS spectra exhibit, except for R = i-Pr, distorted octets that can give information on the EFG PAS orientation. Coherent (1)J(Co-59, P-31) values are obtained from the multiplet spacings of the CP/MAS spectra and from P-31 and Co-59 Line-widths in solution. Moreover the Co-59 line-width provides information on the magnitude of the quadrupole interaction. (C) 1999 Elsevier Science B.V, All rights reserved.

Solution P-31 and Co-59 and solid-state P-31 CP/MAS NMR studies of triphenylphosphinecobaloximes

GOBETTO, Roberto;
1999-01-01

Abstract

The P-31 CP/MAS NMR spectra from powder samples and the P-31 and Co-59 solution NMR spectra of [RCo(DH)(2)PPh3] (R = Me, n-Pr, CH2Ph, CH2Cl, CH2CF3, Ph, i-Pr) are reported. Due to coupling to Co-59 (I = 7/2), the P-31 CP/MAS spectra exhibit, except for R = i-Pr, distorted octets that can give information on the EFG PAS orientation. Coherent (1)J(Co-59, P-31) values are obtained from the multiplet spacings of the CP/MAS spectra and from P-31 and Co-59 Line-widths in solution. Moreover the Co-59 line-width provides information on the magnitude of the quadrupole interaction. (C) 1999 Elsevier Science B.V, All rights reserved.
1999
300
414
420
COUPLING-CONSTANTS; COBALOXIMES; SPECTRA; QUADRUPOLE; COMPLEXES; NUCLEI; SECOND ORDER QUADRUPOLAR EFFECTS
Asaro, F; Gobetto, Roberto; Liguori, L; Pellizer, G.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/25224
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