Premium
Conformational Isomerism in Monomeric, Low‐Coordinate Group 12 Complexes Stabilized by a Naphthyl‐Substituted m ‐Terphenyl Ligand
Author(s) -
Gridley Benjamin M.,
Moxey Graeme J.,
Lewis William,
Blake Alexander J.,
Kays Deborah L.
Publication year - 2013
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201301872
Subject(s) - terphenyl , conformational isomerism , steric effects , chemistry , crystallography , ligand (biochemistry) , monomer , stereochemistry , solid state , group (periodic table) , molecule , organic chemistry , biochemistry , receptor , polymer
The synthesis and characterization of the first series of low‐coordinate bis(terphenyl) complexes of the Group 12 metals, [Zn(2,6‐Naph 2 C 6 H 3 ) 2 ] ( 1 ), [Cd(OEt 2 )(2,6‐Naph 2 C 6 H 3 ) 2 ] ( 2 ) and [Hg(OEt 2 )(2,6‐Naph 2 C 6 H 3 ) 2 ] ( 3 ) (Naph=1‐C 10 H 7 ) are described. The naphthyl substituents of the terphenyl ligands confer considerable steric bulk, and as a result of limited flexibility introduce multiple conformations to these unusual systems. In the solid state, complex 1 features a two‐coordinate Zn centre with the ligands oriented in a syn / anti conformation, whereas the three‐coordinate distorted T‐shaped complexes 2 and 3 feature the ligands in the syn / syn configurations. The results of DFT calculations are in good agreement with the solid‐state configurations for these complexes and support the spectroscopic measurements, which indicate several conformers in solution.