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CuClSe 1.53 Te 0.47 and CuClSe 0.56 Te 1.44 : Structural and Vibrational Spectroscopic Investigations on Copper(I) Chalcogen Chlorides
Author(s) -
Nilges Tom,
Zimmerer Stefan,
Kurowski Daniel,
Pfitzner Arno
Publication year - 2002
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/1521-3749(200212)628:12<2809::aid-zaac2809>3.0.co;2-j
Subject(s) - chalcogen , isostructural , chemistry , crystallography , monoclinic crystal system , tellurium , raman spectroscopy , copper , halide , crystal structure , tellurate , stoichiometry , inorganic chemistry , ion , organic chemistry , physics , optics
CuClSe 1.53 Te 0.47 and CuClSe 0.56 Te 1.44 are obtained from the reaction of CuCl, Se, and Te in stoichiometric amounts. Both copper(I) selenium tellurium chlorides are monoclinic, space group P 2 1 / n (no. 14) with lattice constants of a = 7.837(1) Å, b = 4.699(1) Å, c = 10.762(2) Å, β = 104.37(2)°, V = 383.9(1) Å 3 (CuClSe 1.53 Te 0.47 ), and a = 8.074(1) Å, b = 4.830(1) Å, c = 10.973(1) Å, β = 103.87(2)°, V = 415.5(1) Å 3 (CuClSe 0.56 Te 1.44 ), and Z = 4. A common feature of these isostructural compounds are heteroatomic strands ∞ 1 [YY'] (Y, Y' = chalcogen). These strands are running along [010] and are connected to layers by chains ∞ 1 [CuCl]. Vibrational spectra of CuClSe 1.53 Te 0.47 , CuClSe 0.56 Te 1.44 , CuXTe 2 and CuX'Se 2 (X = Cl, Br, I; X' = Cl, Br) are analysed with respect to the bonding relations of the chalcogen chains. Modes derived from IR and Raman spectra are assigned by correlation with tri gonal Se and related copper(I) chalcogen halides. Both, X‐ray structural data and an analysis of the chalcogen vibrational modes in IR and Raman spectra, lead to a detailed insight into the ordering phenomena of the chalcogen chains in this type of copper(I) chalcogen halides.