1,1'-(Diselanediylbis{[P,P-diphenyl-N-(tri-methyl-sil-yl)phospho-rimido-yl]methanylyl-idene})bis-[1,1-diphenyl-N-(tri-methyl-sil-yl)-?(5)-phosphanamine] pentane disolvate.

ABSTRACT: The title compound, C62H78N4P4Se2Si4·2C5H12, is made up of two [SeC(PPh2NSiMe3)(PPh2NHSiMe3)] units related by an inversion center situated at the mid-point of the diselenide bond. It crystallized with two disordered mol-ecules of pentane used as solvent of crystallization. It is a rare example of an anti-periplanar diselenide and exhibits a long Se-Se bond of 2.4717?(8)?Å. The Se-C bond length of 1.876?(5)?Å is short in comparison with the range of values found for other diselenides (1.91-1.97?Å). The mol-ecule exhibits two intra-molecular N-H?N hydrogen bonds. In the crystal, there are no significant inter-molecular inter-actions present. One of the Me3Si- groups is disordered over two positions with a refined occupancy ratio of 0.708?(8):0.292?(8). The contribution of the disordered solvent to the scattering was removed with the SQUEEZE option of PLATON [Spek (2009 ?). Acta Cryst. D65, 148-155]. The solvent contribution has been included in the reported mol-ecular weight and density.

SUBMITTER: Thirumoorthi R 

PROVIDER: S-EPMC3914070 | biostudies-literature | 2014 Jan

REPOSITORIES: biostudies-literature