Received 13 February 2013
aCollege of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China,bDepartment of Chemistry, Faculty of Science, Prince of Songkla University, Hat-Yai, Songkhla 90112, Thailand,cX-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia, and dDepartment of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
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In the title benzene-solvated heteroleptic lithium complex, [Li(C25H21P2S2)(C10H8N2)]·C6H6, the LiI ion is four-coordinated in a distorted tetrahedral geometry by two S atoms and two N atoms of the two chelating ligands, viz. bis(diphenylthiophosphinoyl)methyl and 2,2'-bipyridine. The 2,2'-bipyridine molecule is slightly twisted with a dihedral angle between the pyridine rings of 7.35 (12)°. Intramolecular C-HS hydrogen bonds are present. In the crystal, molecules are stacked along the c axis by - interactions, with centroid-centroid distances of 3.6021 (15) and 3.6401 (16) Å. The crystal structure also features weak C-H interactions.
For standard bond lengths, see: Allen et al. (1987). For background to and applications of thiophosphinoyl ligands and their complexes, see: Amir et al. (2013); Leung, Wan & Mak (2010); Leung, Wan, Kan & Mak (2010); Ren et al. (2011). For related structures, see: Thirumoorthi & Chivers (2012).
Data collection: APEX2 (Bruker, 2009); cell refinement: SAINT (Bruker, 2009); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL, PLATON (Spek, 2009), Mercury (Macrae et al., 2006) and publCIF (Westrip, 2010).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: RZ5044 ).
We thank the Fundamental Research Funds for the Central Universities (XDJK2013C032) and the Doctoral Foundation of Southwest University for support and Universiti Sains Malaysia for the Research University Grant No. 1001/PFIZIK/811160. The authors also thank Universiti Sains Malaysia (USM) for the RUC grant (Structure Determination of 50 kDa Outer Membrane Proteins From S.typhi By X-ray Protein Crystallography, No. 1001/PSKBP/8630013).
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