Premium
Synthesis and Structure of [Tp*Rh{P(C 7 H 7 ) 3 }] – Competition between the Ligands Tris(3,5‐dimethyl‐1‐pyrazolyl)borate (Tp*) and Tris(1‐cyclohepta‐2,4,6‐trienyl)phosphane. Proof of the κ 2 ( N,B–H ) Coordination Mode of the Tp* Ligand
Author(s) -
Herberhold Max,
Eibl Stefan,
Milius Wolfgang,
Wrackmeyer Bernd
Publication year - 2000
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/(sici)1521-3749(200002)626:2<552::aid-zaac552>3.0.co;2-a
Subject(s) - chemistry , rhodium , tris , stereochemistry , ligand (biochemistry) , olefin fiber , medicinal chemistry , catalysis , organic chemistry , receptor , biochemistry
Stepwise introduction of the potential tripod ligands tris(3,5‐dimethyl‐1‐pyrazolyl)borate (Tp*) and tris(1‐cyclohepta‐2,4,6‐trienyl)phosphane into the coordination sphere of rhodium(I) leads mainly to [Tp*Rh{P(C 7 H 7 ) 3 }] ( 4 ), in which Tp* is linked to the rhodium through a single pyrazolyl group and a non‐linear B–H–Rh bridge. This is the novel, now firmly established coordination mode κ 2 ( N,B–H ). The phosphane ligand is coordinated through one Rh–P and two Rh‐olefin bonds. Important structural features determined for the crystalline state of 4 are retained in solution, as shown by the 1 H, 11 B, 13 C, 31 P and 103 Rh NMR spectra.