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Solution structure of [(triphos*)RhH 2 (AuPPh 3 ) 3 ][PF 6 ] 2 deduced by one‐ and two‐dimensional 1 H{ 31 P} and 1 H{ 103 Rh} double‐resonance techniques
Author(s) -
Imhof Daniel,
Rüegger Heinz,
Venanzi Luigi M.,
Ward Thomas R.
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.1260291314
Subject(s) - triphos , chemistry , phosphine , diastereomer , moiety , stereochemistry , crystallography , tris , molecule , organic chemistry , catalysis , biochemistry
The application of 1 H{ 31 P} and 1 H{ 103 Rh} double‐resonance techniques for the elucidation of the solution structure of the metalla‐tetrahedrane clusters of the [(triphos*)RhH 2 (AuPPh 3 ) 3 ][PF 6 ] 2 type, with the chiral tripodal phosphine triphos* [ RRR/SSS ‐ or RRS/SSR ‐1,1,1,‐tris(methylphenylphosphinomethyl)ethane] is described. Variable‐temperature studies revealed three types of dynamic processes, i.e. rapid rotation of the trigold moiety (AuPPh 3 ) 3 , mutual exchange of the diastereotopic hydrides and slow rotation of the RRS/SSR ‐triphos* unit in one diastereomer.