Copper- and Silver-Containing Heterometallic Iodobismuthates: Features of Thermochromic Behavior

Author:

Shentseva Irina A.1,Usoltsev Andrey N.1ORCID,Korobeynikov Nikita A.1ORCID,Sukhikh Taisiya S.1ORCID,Shayapov Vladimir R.1,Sokolov Maxim N.1ORCID,Adonin Sergey A.1

Affiliation:

1. Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, Lavrentieva St. 3, 630090 Novosibirsk, Russia

Abstract

Nine heterometallic iodobismuthates with the general formula Cat2{[Bi2M2I10}] (M = Cu(I), Ag(I), Cat = organic cation) were synthesized. According to X-ray diffraction data, their crystal structures consisted of {Bi2I10} units interconnected with Cu(I) or Ag(I) atoms through I-bridging ligands, forming one-dimensional polymers. The compounds are thermally stable up to 200 °C. Optical band gaps (Eg), estimated at room temperature via diffuse reflectance measurements, range from 1.81 to 2.03 eV. Thermally induced changes in optical behavior (thermochromism) for compounds 1–9 were recorded, and general correlations were established. The thermal dependence of Eg appears to be close to linear for all studied compounds.

Funder

Russian Science Foundation

Publisher

MDPI AG

Subject

Inorganic Chemistry,Organic Chemistry,Physical and Theoretical Chemistry,Computer Science Applications,Spectroscopy,Molecular Biology,General Medicine,Catalysis

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