Electropolymerizable N-heterocyclic carbene complexes of Rh and Ir with enantiotropic polymorphic phases. Issue 7 (4th February 2020)

• Record Type: Journal Article
• Authors: Wang, Weiran; Lynch, Vincent M.; Guo, Hongyu; Datta, Anwesha; Jones, Richard A.
• Is Part Of: Dalton transactions. Volume 49:Issue 7(2020)
• Page Start: 2264
• Page End: 2272
• Publication Date: 2020-02-04
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c9dt04844h
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : New Rh and Ir complexes of an N-heterocyclic carbene (NHC) with featuring a terthiophene backbone were synthesized with enantiotropic polymorphic phases, along with their new electrochromic conducting metallopolymers were also synthesized. Abstract : New Rh (1 ) and Ir (2 ) complexes of an N-heterocyclic carbene (NHC) featuring a terthiophene backbone were synthesized. Single crystal X-ray diffraction studies of 1 and 2 at 100 K and 298 K respectively, revealed two enantiotropic polymorphic phases with similar lattice parameters for each compound. The transition temperature between two crystalline forms for each compound was determined by measuring the percentage of reflections with a different space group ranging from 100 K to 298 K. Both 1 and 2 were also found to catalyze the hydrogen transfer reaction. The conducting metallopolymers poly-1 and poly-2 were synthesized from oxidative electropolymerization of 1 and 2, respectively, in CH2 Cl2 electrolyte solution on indium tin oxide-(ITO) coated glass. The electrochromic properties of synthesized conducting metallopolymers were studied by UV-vis-NIR spectroelectrochemistry.