title: Facile access to the hydrazone functionalized PdGeS cluster [{R(N)Ge(mu-S)3}4Pd6] from the thiogermanate anion [{R(N)Ge}2(mu-S)2S2]2-.
abstract: The decanuclear ternary PdGeS cluster [{R(N)Ge(mu-S)(3)}(4)Pd(6)] x MeOH (2 x MeOH) has been obtained in high yield by a two-step reaction, involving the derivatization of the carbonyl functionalized adamantane-like [(R(1)Ge)(4)(mu-S)(6)] (R(1) = CMe(2)CH(2)COMe) with N(2)H(4) x H(2)O, and a subsequent reaction of the resulting hydrazone functionalized thiogermanate (NH(3)NH(2))(2)[(R(N)Ge)(2)(mu-S)(2)S(2)] (R(N) = CMe(2)CH(2)CMeNNH(2), 1) with an acidic solution of (N,N'-tmeda)Pd(NO(3))(2). Cluster 2 has an elegant molecular structure which can be viewed as an R(N) ligated ensemble of four edge-sharing [Pd(3)GeS(3)] defect hetercubanes that meet at an unoccupied center. Thus, the cluster consists of six square-planar coordinated Pd(II) ions at the vertices of a regular octahedron with four faces capped by four [R(N)GeS(3)](3-) units. The title compounds were structurally characterized by means of single-crystal X-ray diffraction as well as physical property measurements. Moreover, density functional theory calculations were performed to gain insight into the unique coordination situation of the hydrazone substituent.
authors: Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse, 35043 Marburg, Germany.
authors: Mohammad Reza
authors: MR
authors: Halvagar
authors: Zohreh
authors: Z
authors: Hassanzadeh Fard
authors: Lin
authors: L
authors: Xiong
authors: Stefanie
authors: S
authors: Dehnen