Journal article
Authors list: Beck, J
Publication year: 1996
Pages: 165-170
Journal: Journal of Solid State Chemistry
Volume number: 125
Issue number: 2
ISSN: 0022-4596
DOI Link: https://doi.org/10.1006/jssc.1996.0280
Publisher: Elsevier
Abstract:
MoTe4Br is obtained from Te2Br and MoTe2 in a sealed evacuated silica ampoule at 440 degrees C in the form of platelike crystals with a silver luster. It crystallizes in the triclinic space group with a = 682.1(3) pm, b = 783.6(3) pm, c = 793.1(3) pm, alpha = 113.25(2)degrees, beta = 102.97(1)degrees, gamma = 101.37(2)degrees. The structure is built of infinite one-dimensional Mo(Te-2)(2) chains with intercalated bromide ions and Mo-2 pair formation along the chain. MoTe6Br3 is formed from MoBr3, Te2Br, and Te in 1:2:2 molar ratio in a sealed evacuated glass ampoule at 300 degrees C. The silvery crystals belong to the triclinic crystal system, space group , a = 837.2(1) pm, b = 1141.4(2) pm, c = 1442.0(2) pm, alpha = 81.70(1)degrees, beta = 83.07(1)degrees, gamma = 74.34(1)degrees. The structure consists of dimeric cationic complexes [Mo-2(Te-2)(2)(Te-4)(2)](6+) which are connected by bromide ions to layers. In the complexes Mg pairs are bridged by two Te-2(2-) groups and are additionally bound in a eta(4)-pi. fashion to two almost planar Te-4 rings that can be considered to be Te-4(2+) polycations. The complexes in the structure of MoTe6Br3 can formally be derived as fragments from the chains of MoTe4Br. (C) 1996 Academic Press, Inc.
Citation Styles
Harvard Citation style: Beck, J. (1996) Mo-2 dimers in [Mo(Te-2)(2)] chains in MoTe4Br and in their cationic fragments [Mo-2(Te-2)(2)(Te-4)(2)](6+) in MoTe6Br3: Two molybdenum telluride bromides with a close structural relationship, Journal of Solid State Chemistry, 125(2), pp. 165-170. https://doi.org/10.1006/jssc.1996.0280
APA Citation style: Beck, J. (1996). Mo-2 dimers in [Mo(Te-2)(2)] chains in MoTe4Br and in their cationic fragments [Mo-2(Te-2)(2)(Te-4)(2)](6+) in MoTe6Br3: Two molybdenum telluride bromides with a close structural relationship. Journal of Solid State Chemistry. 125(2), 165-170. https://doi.org/10.1006/jssc.1996.0280
Keywords
STABILIZATION; TE-4(2+)
