Thermochromism and structure of piperazinium tetrachlorocuprate(II) complexes

Riley, MJ, Neill, D, Bernhardt, PV, Byriel, KA and Kennard, CHL (1998) Thermochromism and structure of piperazinium tetrachlorocuprate(II) complexes. Inorganic Chemistry, 37 14: 3635-3639. doi:10.1021/ic971612w

Author Riley, MJ
Neill, D
Bernhardt, PV
Byriel, KA
Kennard, CHL
Title Thermochromism and structure of piperazinium tetrachlorocuprate(II) complexes
Journal name Inorganic Chemistry   Check publisher's open access policy
ISSN 0020-1669
Publication date 1998-01-01
Year available 1998
Sub-type Article (original research)
DOI 10.1021/ic971612w
Open Access Status Not yet assessed
Volume 37
Issue 14
Start page 3635
End page 3639
Total pages 5
Place of publication WASHINGTON
Language eng
Subject 1606 Physical and Theoretical Chemistry
1604 Inorganic Chemistry
Abstract The tetrachlorocuprate(II) ion can crystallize in two different structures with the piperazinium dication (pipzH(2)). Both structures contain discrete CuCl42- species. A yellow compound (pipzH(2))[CuCl4]. 2H(2)O (1) is monoclinic (C2/c, Z = 4, a = 10.538(3) Angstrom, b = 7.4312(5) Angstrom, c = 17.281(4) Angstrom, beta = 111.900(10)degrees) and contains the CuCl42- ion as a distorted tetrahedron. A green compound (pipzH(2))(2)[CuCl4]. Cl-2. 3H(2)O (2) is triclinic (P (1) over bar, Z = 2, a = 9.264(3) Angstrom, b = 10.447(2) Angstrom, c = 11.366(2) Angstrom, alpha = 68.38 degrees, beta = 82.86(2)degrees, gamma = 83.05(2)degrees) and contains the CuCl42- ion with a square planar geometry. This latter compound shows thermo/photochromism, changing from green to yellow upon heating or laser irradiation.
Keyword Chemistry, Inorganic & Nuclear
Vibrational Fine-structure
D-d Transitions
Planar Cucl42-ion
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Chemistry and Molecular Biosciences
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Citation counts: TR Web of Science Citation Count  Cited 23 times in Thomson Reuters Web of Science Article | Citations
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Created: Mon, 13 Aug 2007, 20:32:20 EST