Crystal structures of cis-diiododiammine platinum and trans-diazidodiammine platinum

Abstract

Platinum(II) complexes cis-[Pt(NH₃)₂I₂] (1) and trans-[Pt(NH₃)₂(N₃)2] (2) are structurally characterized separately for the first time. The crystallographic data are as follows: for 1, a = 7.0065(6) Å, b = 6.8714(6) Å, c = 7.4106(8) Å, β = 108.432(7)°, space group P2₁/m, Z = 2, ρ_calc = 4.739 g/cm³; for 2, a = 8.1337(5) Å, b = 11.5821(7) Å, c = 6.9705(5) Å, β = 107.256(2)°, space group P2₁/c, Z = 4, ρ_calc = 3.318 g/cm³. Platinum atoms have a square planar environment; the main structure-forming factor is the presence of intermolecular hydrogen bonds forming chain motifs in the structure of 1 and a threedimensional framework in the structure of 2.