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Tetrakis(trimethylstannyl)germanium, the first observation of indirect nuclear 119 Sn– 73 Ge spin–spin coupling 119 Sn– 73
Author(s) -
Wrackmeyer Bernd,
Bernatowicz Piotr
Publication year - 1999
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/(sici)1097-458x(199906)37:6<418::aid-mrc472>3.0.co;2-x
Subject(s) - chemistry , heteronuclear molecule , germanium , coupling constant , relaxation (psychology) , nuclear magnetic resonance spectroscopy , sign (mathematics) , nucleus , spin (aerodynamics) , nuclear magnetic resonance , analytical chemistry (journal) , stereochemistry , physics , thermodynamics , mathematical analysis , mathematics , biology , microbiology and biotechnology , organic chemistry , silicon , psychology , social psychology , particle physics , chromatography
Tetrakis(trimethylstannyl)germanium was prepared and studied by 1 H, 13 C, 73 Ge and 119 Sn NMR spectroscopy. Quadrupolar relaxation of the 73 Ge nucleus is slow, which allows one to measure 1 J ( 117/119 Sn, 73 Ge) = 37 Hz and to determine its positive sign by a 2D heteronuclear 73 Ge– 1 H shift correlation. The absolute signs of other coupling constants involving the nuclei 1 H, 13 C and 117/119 Sn were also determined either by appropriate 2D shift correlations or selective 119 Sn 1 H, 13 C double resonance experiments. Copyright © 1999 John Wiley & Sons, Ltd.