ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Research on structural, spectral (IR, UV-Vis, ¹H- and ¹³C-NMR) and light emitting properties of triisocyano-based trinuclear Au(I) complexes

Nursevin Özkan, Sultan Erkan, Koray Sayın, and Duran Karakaş

Science Faculty, Chemistry Department, Cumhuriyet University, Sivas, Turkey

E-mail: sultanerkan58@gmail.com

Received: 27 September 2019  Accepted: 1 February 2020

Abstract:

Triisocyano-based trinuclear gold (I), {Ph[O(CH₂)₄OPhNCAuPhX₅]₃ [X = F, complex (1), X = Br complex (2)]}, complexes are optimized at M062X/LANL2DZ/6-31G(d) level in the gas phase and molecular structures are obtained. IR, UV-Vis and NMR spectra are calculated at the same level and molecular structure of the complexes are verified. In the complexes, the environment geometry of gold (I) was almost linear and the entire structures of the complexes were found to be propeller-shaped. Some molecular structure descriptors of the complexes were calculated. It is found that µ, α, I, A, ΔE and χ values of complex (2) are higher than complex (1) and η, σ, ω and ε of the complexes are very close to each other. Light emitting properties of the complexes are investigated by computationally on the basis of Marcus theory. Transfer integrals and reorganization energies for electron and hole indicated that the complexes can be considered as a promising hole and electron transfer material for light emitting devices.

Keywords: Computational research; Trinuclear gold (I) complexes; Spectroscopic studies; Reorganization energy

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-020-01088-3

Chemical Papers 74 (8) 2415–2425 (2020)