Thiocyanato-bridged platinum heterocycles: structure and properties of disc-like metallomesogens

The synthesis and liquid crystalline properties of novel disc-like di- and tetra-platinum organyls have been described recently. Here, the synthesis and mesomorphic properties of the first thiocyanato-bridged, sheet-shaped di- and tetra-platinum complexes are described. Structural features of these sheet-shaped thiocyanato-bridged di- and tetra-platinum organyls based on various methods (e.g. 1H-, 13C-, 195Pt-NMR) are discussed and related to the mesomorphic properties of these compounds. In addition, the molecular structure of a new thiocyanato-bridged diplatinum organyl carrying eight hexyl chains has been elucidated by single crystal X-ray diffraction analysis.