Synthesis, crystal structure and thermochromism of benzimidazolium tetrachlorocuprate: (C7H7N2)2[CuCl4]

Rahul Bhattacharya; Mau Sinha Ray; Raja Dey; Lara Righi; Gabriele Bocelli; Ashutosh Ghosh

doi:10.1016/S0277-5387(02)01237-8

Synthesis, crystal structure and thermochromism of benzimidazolium tetrachlorocuprate: (C₇H₇N₂)₂[CuCl₄]

Rahul Bhattacharya, Mau Sinha Ray, Raja Dey, Lara Righi, Gabriele Bocelli, Ashutosh Ghosh

Research output: Contribution to journal › Article › peer-review

46 Scopus citations

Abstract

The synthesis and crystal structure of thermochromic, yellow benzimidazolium tetrachlorocuprate(II), (C₇H₇N₂)₂CUCl₄ (1), have been reported. The compound crystallizes in the C2/c space group and contains discrete tetrahedral CuCl₄^2- species. It absorbs one molecule of water from humid atmosphere at room temperature to produce a hydrated green form, (C₇H₇N₂)₂ CUCl₄·H₂O, which upon heating loses the water molecule in two steps to form the anhydrous yellow compound 1. The role of the water molecule on the solid state, yellow⇋green thermochromic transformation is discussed.

Original language	English (US)
Pages (from-to)	2561-2565
Number of pages	5
Journal	Polyhedron
Volume	21
Issue number	25-26
DOIs	https://doi.org/10.1016/S0277-5387(02)01237-8
State	Published - Dec 1 2002
Externally published	Yes

Bibliographical note

Funding Information:
We would like to thank the University Grant Commission, India, for the financial support (Sanction No. UGC/2976/GRW(UNG) 99-00).

Keywords

Benzimidazolium
Crystal structures
Tetrachlorocuprate
Thermochromism

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title = "Synthesis, crystal structure and thermochromism of benzimidazolium tetrachlorocuprate: (C7H7N2)2[CuCl4]",

abstract = "The synthesis and crystal structure of thermochromic, yellow benzimidazolium tetrachlorocuprate(II), (C7H7N2)2CUCl4 (1), have been reported. The compound crystallizes in the C2/c space group and contains discrete tetrahedral CuCl42- species. It absorbs one molecule of water from humid atmosphere at room temperature to produce a hydrated green form, (C7H7N2)2 CUCl4·H2O, which upon heating loses the water molecule in two steps to form the anhydrous yellow compound 1. The role of the water molecule on the solid state, yellow⇋green thermochromic transformation is discussed.",

keywords = "Benzimidazolium, Crystal structures, Tetrachlorocuprate, Thermochromism",

author = "Rahul Bhattacharya and Ray, {Mau Sinha} and Raja Dey and Lara Righi and Gabriele Bocelli and Ashutosh Ghosh",

note = "Funding Information: We would like to thank the University Grant Commission, India, for the financial support (Sanction No. UGC/2976/GRW(UNG) 99-00). ",

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T2 - (C7H7N2)2[CuCl4]

AU - Bhattacharya, Rahul

AU - Ray, Mau Sinha

AU - Dey, Raja

AU - Righi, Lara

AU - Bocelli, Gabriele

AU - Ghosh, Ashutosh

N1 - Funding Information: We would like to thank the University Grant Commission, India, for the financial support (Sanction No. UGC/2976/GRW(UNG) 99-00).

PY - 2002/12/1

Y1 - 2002/12/1

N2 - The synthesis and crystal structure of thermochromic, yellow benzimidazolium tetrachlorocuprate(II), (C7H7N2)2CUCl4 (1), have been reported. The compound crystallizes in the C2/c space group and contains discrete tetrahedral CuCl42- species. It absorbs one molecule of water from humid atmosphere at room temperature to produce a hydrated green form, (C7H7N2)2 CUCl4·H2O, which upon heating loses the water molecule in two steps to form the anhydrous yellow compound 1. The role of the water molecule on the solid state, yellow⇋green thermochromic transformation is discussed.

AB - The synthesis and crystal structure of thermochromic, yellow benzimidazolium tetrachlorocuprate(II), (C7H7N2)2CUCl4 (1), have been reported. The compound crystallizes in the C2/c space group and contains discrete tetrahedral CuCl42- species. It absorbs one molecule of water from humid atmosphere at room temperature to produce a hydrated green form, (C7H7N2)2 CUCl4·H2O, which upon heating loses the water molecule in two steps to form the anhydrous yellow compound 1. The role of the water molecule on the solid state, yellow⇋green thermochromic transformation is discussed.

KW - Benzimidazolium

KW - Crystal structures

KW - Tetrachlorocuprate

KW - Thermochromism

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