Stabilization of hexa-coordinated P(v) corroles by axial silyloxy groups. Issue 18 (11th April 2016)

• Record Type: Journal Article
• Authors: Chatterjee, Tamal; Lee, Way-Zen; Ravikanth, Mangalampalli
• Is Part Of: Dalton transactions. Volume 45:Issue 18(2016)
• Page Start: 7815
• Page End: 7822
• Publication Date: 2016-04-11
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c6dt00842a
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : We report the stabilization of the hexa-coordination environment for P(v ) corroles using alkyl/aryl substituted silyloxy groups as axial ligands. The P(v ) corroles are highly fluorescent and highly stable under electrochemical conditions. Abstract : We report the stabilization of the hexa-coordination environment for P(v ) corroles by using alkyl/aryl substituted silyloxy groups as axial ligands. The P(v ) corroles are highly fluorescent in a hexa-coordination environment compared to in a penta-coordination environment. However, P(v ) corroles generally undergo axial ligand dissociation to form a mixture of penta- and hexa-coordinated P(v ) corroles in non-coordinating solvents such as toluene, CH2 Cl2, CHCl3 . The usage of moderately bulkier and electron-donating silyloxy groups helps to restrict the axial ligand dissociation of silyloxy substituted hexa-coordinated P(v ) corroles in non-coordinating solvents. The crystal structure confirmed the hexa-coordination geometry for the P(v ) corroles. The P(v ) corroles strongly absorb and emit in the visible region, with decent quantum yields and singlet state lifetimes. The hexa-coordinated P(v ) corroles are highly stable under electrochemical conditions.