Effect of Arsenic Coordination State on the Structure, Aromaticity, and Optical Properties of Dithienoarsoles

• Published in: European journal of inorganic chemistry Vol. 2019; no. 11-12; pp. 1539 - 1543
• Main Authors: Green, Joshua P, Gupta, Arvind K, Orthaber, Andreas
• Format: Journal Article
• Language: English
• Published: Weinheim Wiley Subscription Services, Inc 01.03.2019
• Subjects: Aromaticity; Arsenic; Harmonic oscillators; Inorganic chemistry; Optical properties; Organic chemistry; Palladium; Phosphorus
• DOI: 10.1002/ejic.201801169
• ISSN: 1434-1948

A silylated derivative of 4‐phenyl‐dithieno[3,2‐b:2′,3′‐d]arsole (DTAs) was synthesized, and the effect of coordinating of DTAs compounds to Pd on their structural and optical properties was investigated. Coordination of the As to Pd was found to increase the structural aromaticity of the ring system as measured by the harmonic oscillator measure of heterocyclic electron delocalization (HOMHED), and the pyramidalization of the As atoms was also found to show a good correlation with the HOMHED values. However, coordination had a more subtle impact on the optical properties than seen for phosphorus‐containing analogues as the metal‐ligand interactions were weaker.Dedicated to Professor Dr. Edgar Niecke and Prof. Dr. Koop Lammertsma on the occasions of their 80th and 70th birthdays, respectively, for their inspiring contributions to phosphorus chemistry.