Structural comparison of octahedral MoO22+ complexes of bidentate and linear tetradentate N,S-donor ligands Article

Berg, JM, Spira, D, Wo, K et al. (1984). Structural comparison of octahedral MoO22+ complexes of bidentate and linear tetradentate N,S-donor ligands . INORGANICA CHIMICA ACTA, 90(1), 35-39. 10.1016/S0020-1693(00)80716-1

cited authors

  • Berg, JM; Spira, D; Wo, K; McCord, B; Lye, R; Co, MS; Belmont, J; Barnes, C; Kosydar, K; Raybuck, S; Hodgson, KO; Bruce, AE; Corbin, JL; Stiefel, EI

authors

abstract

  • The structures of MoO2[NH2C(CH3)2CH 2S]2 and MoO2[SC(CH3)2CH2 NHCH2CH2NHCH2C (CH3)2S] have been determined using X-ray diffraction intensity data collected by counter techniques. MoO2[NH2C(CH3)2CH 2S]2 crystallizes in space group Pbca with a = 11.234(3), b = 11.822(3) and c = 20.179(5) Å, V = 2680(2) Å3 and Z = 8. Its structure is derived from octahedral coordination with cis oxo groups [MoO = 1.705(3) and 1.705(3)], trans thiolate donors cis to the oxo groups [MoS = 2.416(1) and 2.402(1) and N donors trans to oxo [MoN = 2.325(3) and 2.385(4) Å]. MoO2[SC(CH3)2CH 2NHCH2CH2NHCH2 C(CH3)2S] crystallizes in the space group P21/c with a = 10.798(5), b = 6.911(2), c = 20.333(9) Å, β = 95.20°, V = 1511(2) Å3 and Z = 4. Its structure is very similar to that of MoO2[NH2C(CH3)2 CH2S]2 with MoO = 1.714(2) and 1.710(2), MoS = 2.415(1) and 2.404(1) and MoN = 2.316(3) and 2.362(3). The small differences in the geometries of the two compounds are attributed to the constraints of the extra chelate ring in the complex with the tetradentate ligand. The structures in this paper stand in contrast to those reported for complexes of similar ligands wherein steric hindrance produces complexes with a skew trapezoidal bipyramidal structure. © 1984.

publication date

  • November 15, 1984

published in

Digital Object Identifier (DOI)

start page

  • 35

end page

  • 39

volume

  • 90

issue

  • 1