Skip to main content

Research Repository

Advanced Search

Synthesis, thermal and optical properties of a novel bis(2-(4-dicyanovinylphenyl) pyridinato-N, C2) iridium(acetylacetonate)

Altinolcek, N.; Tavasli, M.; Aydemir, M.; Abay, B.; Monkman, A.P.

Authors

N. Altinolcek

M. Tavasli

M. Aydemir

B. Abay



Abstract

Bis(2-(4-formylphenyl) pyridinato-N, C2) iridium(acetylacetonate) (5) was subjected to a Knoevenagel reaction with malononitrile in dichloromethane in the presence of catalytic amount of pyrrolidine. This gave successfully a novel bis(2-(4-dicyanovinylphenyl) pyridinato-N, C2) iridium(acetylacetonate) (6) in good yield (83%). Complex 6 was fully chracterised by H-1, C-13 NMR, FT-IR, elemental analysis. Complex 6 showed a strong ligand centred (LC) absorption band at 355 nm (epsilon 56490 L mol (1) cm (1)) and weak metal-to-ligand charge transfer (MLCT) bands at 445 (epsilon 4154 L mol (1) cm (1)) and 535 nm (epsilon 2606 L mol (1) cm (1)). Complex 6 loses its acac moiety between 248 and 336 Alpha degrees C (under N-2 atmosphere) and emits a red light at 695 nm with a large Stokes shift (160 nm). (C) 2015 Elsevier B.V. All rights reserved.

Citation

Altinolcek, N., Tavasli, M., Aydemir, M., Abay, B., & Monkman, A. (2016). Synthesis, thermal and optical properties of a novel bis(2-(4-dicyanovinylphenyl) pyridinato-N, C2) iridium(acetylacetonate). Inorganica Chimica Acta, 440, 102-106. https://doi.org/10.1016/j.ica.2015.10.028

Journal Article Type Article
Acceptance Date Oct 9, 2015
Online Publication Date Nov 10, 2015
Publication Date 2016
Deposit Date Jan 18, 2017
Journal Inorganica Chimica Acta
Print ISSN 0020-1693
Electronic ISSN 1873-3255
Publisher Elsevier
Volume 440
Pages 102-106
DOI https://doi.org/10.1016/j.ica.2015.10.028
Public URL https://durham-repository.worktribe.com/output/1396299