Options
Implementing the Ambiphilicity of an Organotellurenyl Cation for the Synthesis of a Platinum(II)-Based Carboxylate-Bridged Heterobimetallic Complex: Structure and Bonding Analysis
Journal
European Journal of Inorganic Chemistry
ISSN
14341948
Date Issued
2022-11-08
Author(s)
Deka, Rajesh
Sarkar, Arup
Butcher, Ray J.
Singh, Harkesh B.
Abstract
The metathesis reaction of aryltellurium chloride, ppyTeCl [ppy=2-(2’-pyridyl)phenyl] (5) with AgClO4 afforded Intramolecular Chalcogen Bonding (IChB)-stabilized organotellurenyl cation [ppyTe] ⋅ ClO4 ([6] ⋅ ClO4). The reaction of [6] ⋅ ClO4 with K2PtCl4 in acetic acid resulted in the formation of platinum(II)-based carboxylate-bridged heterobimetallic complex [Pt(ppyTe)(μ-OOCMe)Cl2], 7 containing an organotellurenyl cation as ligand. This is the first time a Pt(II) complex of an organotellurenyl cation donor-acceptor ligand has been reported. Complex 7 was characterized by multi-nuclear NMR spectroscopy (1H, 13C, and 125Te), FT-IR spectroscopy, CHN analysis, and single-crystal X-ray diffraction studies. The single-crystal X-ray diffraction studies and DFT analysis infer that the Te center in 7 behaves as an ambiphilic ligand, accepting electrons from the N-atom of the ppy moiety and the O-atom of the carboxylate groups while simultaneously donating electrons to the Pt(II) center. The 2D-fingerprint plots derived from the Hirshfeld surface analysis reveal multiple intermolecular interactions in the packing diagrams of complex 7. The natural charges accumulated on the atoms in complex 7 were calculated by Natural Population Analysis (NPA). In addition, the HOMO-LUMO energy gap in 7 was calculated.
Subjects