Reaction of silver ion with [ML2X2](L = amine or phosphine; M = Pd or Pt; X = I, Cl, or SCN) leading to orthometallation and catalytic activity. X-ray structure of ab-(2-aminomethyl)phenyl-c-carbonyl-d-iodoplatinum(II)

Abstract

The reaction of trans-[M(NH₂CH₂Ph)₂I₂](M = Pd or Pt) with two molar equivalents of AgBF₄ leads to ortho-metallation of one of the phenyl rings of the benzylamine ligands. The X-ray structure of [[graphic omitted]H₂)(CO)I] shows the Pt to be in a planar molecule σ-bonded to the phenyl ring. Crystals are orthorhombic, space group Ibam, with a= 18.376(8), b= 16.394(5), c= 6.970(1)Å, and Z= 8. R= 0.037 for 1 071 observed [I/σ(I) 3.0] diffractometer data. Bond data include Pt–I 2.701 (1), Pt–C(carbonyl) 1.842(16), Pt–C(aryl) 1.997(15), and Pt–N 2.053(13)Å. The reaction of cis-[M(PMe₂Ph)₂I₂](M = Pd or Pt) with two molar equivalents of AgBF₄ gives cations which catalyse the addition of water to dimethyl acetylenedicarboxylate.