title: Synthesis of a selenidostannate(IV), [Mn(tepa).Sn3Se7]n, demonstrating the transformation from achiral to chiral and dimeric to polymeric structure.
abstract: Although a number of chalcogenostannates have been obtained by using [M(amine)m]n+ as the structure director, these materials with chiral metal complex ions are usually achiral because they are a racemic mix of chiral complex cations. A chiral selenidostannate, [Mn(tepa).Sn3Se7]n (1; tepa = tetraethylenepentamine), containing incorporated [Mn(tepa)]2+ units, is reported herein. The unique structure is just like a grapevine appended with chiral grapes. In the same reaction, a centrosymmetric compound, [Mn(tepa)]2(mu2-Sn2Se6) (2), in which the Sn2Se64- anion acts as a bridge coordinating to [Mn(tepa)]2+ cations, has also been obtained. This is a reaction-time-related process in which compound 2 transformed gradually to 1 after prolonging the reaction time. This phenomenon demonstrates a transformation from achiral to chiral and dimeric to polymeric selenidostannate.
authors.affiliation: Department of Chemistry and Key Laboratory of Organic Synthesis of Jiangsu Province, Suzhou University, Suzhou 215006, People's Republic of China.
authors.forename: Jian
authors.initials: J
authors.lastname: Zhou
authors.forename: Guo-Qing
authors.initials: GQ
authors.lastname: Bian
authors.forename: Jie
authors.initials: J
authors.lastname: Dai
authors.forename: Yong
authors.initials: Y
authors.lastname: Zhang
authors.forename: Ai-Bin
authors.initials: AB
authors.lastname: Tang
authors.forename: Qin-Yu
authors.initials: QY
authors.lastname: Zhu
mesh_terms: D018360:Crystallography, X-Ray; D019281:Dimerization; D006860:Hydrogen Bonding; D008345:Manganese / Q000737:chemistry*; D008958:Models, Molecular; D009942:Organometallic Compounds / Q000138:chemical synthesis* / Q000737:chemistry*; D010316:Particle Size; D012643:Selenium / Q000737:chemistry*; D014001:Tin / Q000737:chemistry*
chemical_list: D009942:Organometallic Compounds; D008345:Manganese; D014001:Tin; D012643:Selenium