Solvothermal synthesis and characterisation of new one-dimensional indium and gallium sulphides: [C10N4H26](0.5)[InS2] and [C10N4H26](0.5)[GaS2]

Two new main group metal sulphides, [C10N4H26](0.5)[InS2] (1) and [C10N4H16](0.5)[GaS2] (2) have been prepared solvothermally in the presence of 1,4-bis(3-aminopropyl)piperazine and their crystal structures determined by single-crystal X-ray diffraction. Both compounds are isostructural and crystallise in the monoclinic space group P2(1)/n (Z = 4), with a = 6.5628(5), b = 11.2008(9), c = 12.6611(9) angstrom and 94.410(4)degrees (wR = 0.035) for compound (1) and a = 6.1094(5), b = 11.2469(9), c = 12.7064(10) angstrom and beta = 94.313(4)degrees (wR = 0.021) for compound (2). The structure of [C10N4H26](0.5)[MS2] (M = In,Ga) consists of one-dimensional [MS2](-) chains which run parallel to the crystallographic a axis and are separated by diprotonated amine molecules. These materials represent the first example of solvothermally prepared one-dimensional gallium and indium sulphides. (c) 2005 Elsevier Inc. All rights reserved.