title: Molecular building blocks for solid-state chalcogenides: solvothermal synthesis of
abstract: Two new molecular metal chalcogenides, tris(ethylenediamine-N, N')manganese(II) tetratelluride, [Mn(C(2)H(8)N(2))(3)]Te(4), (I), and bis[tris(ethylenediamine-N,N')iron(II)] pentaselenodiantimonate(III), [Fe(C(2)H(8)N(2))(3)](2)(Sb(2)Se(5)), (II), containing the isolated molecular building blocks Te(4)(2-) and Sb(2)Se(5)(4-), have been synthesized by solvothermal reactions in an ethylenediamine solution at 433 K. The anion Te(4)(2-) in (I) is a zigzag oligometric chain with Te-Te bond lengths in the range 2. 709-2.751 A. There is a very short contact [3.329 (1) A] between a pair of neighboring Te(4)(2-) anions. In (II), each Sb atom is surrounded by three Se atoms to give a tripodal coordination. One of the three independent Se atoms is a &mgr;(2)-bridging ligand between two Sb atoms; the other two are terminal.
authors.affiliation: Department of Chemistry, Rutgers University, Camden, NJ 08102, USA.
authors.initials: Z
authors.lastname: Chen
authors.initials: RJ
authors.lastname: Wang
authors.initials: XY
authors.lastname: Huang
authors.initials: J
authors.lastname: Li