Angular (cis-stilbazole) geometry in octahedral dimethyldihalidoplatinum(IV) complexes: potential as metallomesogens and X-ray structure of [PtMe2I2(NC5H4CHCHC6H4OC7H15)2]

Abstract The synthesis and characterisation of a series of octahedral dimethyldihalidoplatinum(IV) complexes of 4-alkoxy-4′-stilbazoles with the general formula [PtMe 2 X 2 (NC 5 H 4 CHCHC 6 H 4 OR) 2 ] (X=I or Br, R= n -alkyl) is described. Some of the complexes show mesogenic behaviour. The structure of the complex with X=I and R=C 7 H 15 has been determined by X-ray crystallography, revealing a cis coordination geometry with respect to both the methyl and the substituted 4-alkoxy-4′-stilbazole ( n -OST) ligands.