Cristina Lagunas, Robert A. Gossage, A. Spek
Jan 30, 1998
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0
Influential Citations
63
Citations
Journal
Organometallics
Abstract
The potentially bis-cyclometalating ligand 3,3‘,5,5‘-tetrakis[(dimethylamino)methyl]biphenyl, was prepared from 3,5-(Me2NCH2)2C6H3Br in a one-pot synthesis involving lithium−halogen exchange, transmetalation, and reductive-elimination reactions. This ligand undergoes selective dilithiation in the 4 and 4‘ positions of the biphenyl group to form [Li2{2,6-(Me2NCH2)2C6H2}2]n, which is a versatile precursor to bimetallic complexes via a double transmetalation reaction. The syntheses and characterization of the new homobinuclear Pt(II) and Pd(II) compounds, [(MeCN)Pt{2,6-(Me2NCH2)2C6H2}−]2(CF3SO3)2 and [ClPd{2,6-(Me2NCH2)2C6H2}−]2, is reported in addition to a novel synthetic route to the complex [ClPt{2,6-(Me2NCH2)2C6H2}−]2. The solid-state structure of Pd dimer was determined by single-crystal X-ray diffraction. Oxidative addition of Cl2 to the latter Pt compound produced the bis-platinum(IV) complex [Cl3Pt{2,6-(Me2NCH2)2C6H2}−]2, which reacts with 2 equiv of Ag(O3SCF3) in MeCN solution to form [(MeCN)Cl2Pt{...