183674-97-7Relevant academic research and scientific papers
Chalcogen atom transfer reactions. Kinetics of terminal bonded sulfur atom transfer between main group metal centers
Foley, Stephen R.,Richeson, Darrin S.
, p. 1391 - 1392 (2007/10/03)
The first comprehensive investigation of S atom transfer between two different metal centers is presented using the reaction of the terminal chalcogen atom bearing complex [CyNC((t)Bu)NCy]2SnS with [CyNC((t)Bu)NCy]2Ge(II); this multielectron redox reaction between Ge(II) and Sn(IV) proceeds via a second-order process with an inner sphere mechanism involving a μ-S intermediate as the proposed pathway; results of S and Se atom transfer between [CyNC((t)Bu)NCy]2Ge and PPh3 are also presented.
Multiple bonds between Sn and S: Synthesis and structural characterization of (CyNC((t)Bu)NCy)2Sn=S and [(CyNC(Me)NCy)2Sn(μ-S)]2
Zhou, Yuanlin,Richeson, Darrin S.
, p. 10850 - 10852 (2007/10/03)
Two new sulfido complexes of tin have been prepared by the reaction of styrene sulfide with novel tin(II) amidinate complexes. These compounds exhibit two very different bonding modes for the sulfido ligand; in one case, S=Sn(CyNC((t)Bu)NCy)2 (3), a terminal Sn=S moiety was found while in the other case, [(CyNC(Me)NCy)2Sn(μ-S)]2 (4), a bridging sulfido dimer is observed. The starting complexes were prepared by the reaction of 2 equiv of the appropriate lithium amidinate with SnCl2 to yield the new species Sn(CyNC(R)NCy)2 [Cy = cyclohexyl; R = Me (1); R = (t)Bu (2)]. This account represents the first report of (CyNC((t)Bu)NCy)- and the coordination chemistry of this bulky ligand. Spectroscopic and elemental analyses confirmed the formulas of all of these new species. Compounds 2, 3, and 4 were further characterized by X-ray crystallography. Compound 2 possesses a coordination geometry based on a trigonal bipyramid with one equatorial vertex occupied by the stereochemically active lone pair of electrons. Crystal data for 2: monoclinic, P21/c, a = 18.944(5) A?, b = 10.604(2) A?, c = 19.423(2) A?, β = 95.99(1)°, Z = 4, R = 0.046, R(W) = 0.049. Crystal data for 3: orthorhombic, Cmcm, a = 12.3788(23) A?, b = 14.1977(15) A?, c = 20.670(3) A?, Z = 4, R = 0.057, R(W) = 0.070. Crystal data for 4: monoclinic, P2/n, a = 13.0395(2) A?, b = 13.0263(2) A?, c = 23.8856(2) A?, β = 95.719(3)°, R = 0.055, R(w) 0.044.
