Abstract
In the title hydrated complex, [Co(C15H10ClN3)2]Cl2·4H2O, the complete dication is generated by symmetry. The CoN6 moiety shows distortion from regular octa-hedral geometry with the trans bond angles of two N-Co-N units being 160.62 (9)°. In the crystal, O-H⋯Cl and C-H⋯O inter-actions link the components into (001) sheets. The title compound exhibits blue-light emission, as indicated by photoluminescence data, and a HOMO-LUMO energy separation of 2.23 eV was obtained from its diffuse reflectance spectrum.
Highlights
Since the pioneering work of Tang et al (1987), there has been increasing interest in chelating organic compounds being employed as charge-transporting materials in electronic devices such as OLEDs
The synthesis and a study of the thermal and luminescent properties of d8 transition-metal complexes with the incorporation of substituted 2,20;60,200-terpyridine ligands were described by Momeni et al (2017)
As an extension of such studies, we report the synthesis, structure, spectroscopic characterization and thermal behaviour of the title complex, (I)
Summary
Since the pioneering work of Tang et al (1987), there has been increasing interest in chelating organic compounds being employed as charge-transporting materials in electronic devices such as OLEDs. Single-layer device structures that make use of RuII complexes involving bipyridine and its derivatives show the potential to transport both holes and electrons and exhibit luminescent properties (Rudmann & Rubner, 2001; Gao & Bard, 2000). Reports of the application of cyclometalated IrIII complexes in vapour-deposited OLEDs both as efficient emissive and charge-transporting materials (Adamovich et al, 2003; Grushin et al, 2001) and the luminescent properties of a distorted octahedral NiII complex with 5,50-dimethyl-2,20-bipyridine have been published (Abedi et al, 2015). The synthesis and a study of the thermal and luminescent properties of d8 transition-metal complexes with the incorporation of substituted 2,20;60,200-terpyridine ligands were described by Momeni et al (2017). Symmetry codes: (i) Àx; Ày þ 1; Àz þ 1; (ii) x; y þ 12; Àz þ 1
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