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31 P CP/MAS NMR Spectroscopy of Transition Metal Phosphane Complexes: “ J ‐Recoupling” between Chemically Equivalent 31 P Nuclei in Polycrystalline Compounds of the Type trans ‐[(PR 3 ) 2 MX 2 ], MPd, Pt
Author(s) -
Klaus Elke,
Sebald Angelika
Publication year - 1995
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199506671
Subject(s) - chemistry , crystallography , crystallite , homologous series , nuclear magnetic resonance spectroscopy , solid state nuclear magnetic resonance , spectroscopy , spin (aerodynamics) , phosphorus 31 nmr spectroscopy , metal , nmr spectra database , spectral line , high resolution , transition metal , solid state , analytical chemistry (journal) , nuclear magnetic resonance , stereochemistry , physics , organic chemistry , remote sensing , quantum mechanics , astronomy , catalysis , thermodynamics , geology
Minor modification—large effect: Replacement of Et 3 P by n Bu 3 P in otherwise homologous complexes of the type 1 can dramatically change the solid‐state NMR properties. The reason is that–although both compounds show 31 PA 2 spin systems in solution–only in one case are the 31 P nuclei also magnetically equivalent in the solid state. Therefore a reliable interpretation of the high‐resolution solid‐state 31 P NMR spectra must take into consideration the orientation‐dependent interactions within the 31 P spin pair.