1401033-19-9Relevant academic research and scientific papers
Stable Cu(I) complexes with thioamidoguanidine possessing halide-bridge structure
Sahoo, Santosh K.,Khatun, Nilufa,Jena, Himanshu Sekhar,Patel, Bhisma K.
, p. 10800 - 10807,8 (2012)
Treatment of an aryl-sec-alkyl unsymmetrical thiourea (Tu) with Cu IIX2 (X = I, Br) transform the thiourea (Tu) into a thioamidoguanidino (Tag) moiety with concomitant reduction of CuII to CuI, which forms a [Cu2I(μ2-X) 2Tag2] (X = I (for A) and X = Br (for B)) complex. Meanwhile, the treatment of same unsymmetrical thiourea (Tu) with Cu IX (X = Br) forms a stable cluster with a [CuI 3(μ2-S)4Tu4X3] core (C). Single crystal X-ray diffraction revealed that compounds A and B exhibit 1D chain with a Cu2(μ2-X)2 core, whereas compound C is a CuI3S4Br3 cluster. Compound A is centrosymmetric due to the trans orientation of two Tag units whereas compound B is ascentric due to the cis orientation of two Tag units. In compound A, the Cu2I2 core is perfectly rhomboidal where the iodine atoms are trans oriented. However in compound B, the Cu 2Br2 core is not perfectly rhomboidal (bowl shaped) and the bromine atoms are cis oriented. It is interesting to note that although the Tag moiety in compounds A and B contain two morpholine-O atoms; only one of the morpholine-O atoms (O2) is involved in the generation of three-dimensional network. The CuI3S4Br3 cluster in compound C contains one tri- and two tetra-coordinated CuI centers. The CuI cluster in C contains a Cu2(μ2-S) 2 rhomboidal plane exhibiting a chair and a boat form containing the CuI3S3 unit. In compounds A and B, the two CuI centers are μ2-X bridged and have a μ1-S linkage, whereas in compound C the linkages are opposite having four μ2-S bridges and three μ1-Br linkages.
