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Characterization of partially deuteriated transition metal polyhydrido complexes by heteronuclear 2D NMR techniques
Author(s) -
Nanz Daniel,
Philipsborn Wolfgang Von,
Bucher Urs E.,
Venanzi Luigi M.
Publication year - 1991
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.1260291310
Subject(s) - chemistry , isotopomers , heteronuclear molecule , transition metal , isotope , nucleus , metal , nmr spectra database , spectral line , nuclear magnetic resonance spectroscopy , stereochemistry , crystallography , molecule , organic chemistry , catalysis , physics , quantum mechanics , astronomy , biology , microbiology and biotechnology
( 1 H, 103 Rh) and ( 1 H, 103 Rh){ 2 H} inverse correlation techniques, which profit from the presence of a magnetically active central metal nucleus, were applied to the complex [RhY 2 (Y 2 ){HB(3,5‐Me 2 pz) 3 }] (Y = H or D; pz = pyrazolyl) containing both ‘classical’ and ‘non‐classical’ hydrogen ligands. The sample examined was a mixture of all species ranging from the perprotio to the perdeuterio compound. It is shown that the large isotope chemical shifts of the Rh nucleus can be used to separate the 1D 1 H and 1 H{ 2 H} NMR spectra of the different H/D isotopomers. The observed isotope effects are discussed.