cis-[1,4-Bis(diphenylphosphanyl)butane- j 2 P,P 0 ]dichlorido(cyclohexane-1,2- diamine-j 2 N,N 0 )ruthenium(II) dichloro- methane monosolvate Ismail Warad‡ Department of Chemistry, AN-Najah National University, Nablus, Jordan Correspondence e-mail: ismailwarad@yahoo.fr Received 20 March 2012; accepted 31 March 2012 Key indicators: single-crystal X-ray study; T = 296 K; mean (C–C) = 0.008 A ˚; disorder in solvent or counterion; R factor = 0.050; wR factor = 0.135; data-to- parameter ratio = 19.7. In the title compound, [RuCl 2 (C 6 H 14 N 2 )(C 28 H 28 P 2 )]CH 2 Cl 2 , the Ru II ion is coordinated in a slightly distorted octahedral environment, formed by two cis-oriented chloride ligands, two cis P atoms of a 1,4-bis(diphenylphosphanyl)butane ligand and two cis-chelating N atoms of a bidentate cyclohexane-1,2- diamine ligand. In the crystal, pairs of molecules form inversion dimers via N—HCl hydrogen bonds. In addition, intramolecular N—HCl and weak C—HCl, C—HN, N—H and C—H hydrogen bonds are observed. One of the Cl atoms of the solvent molecule is disordered over two sites with refined occupancies of 0.62 (1) and 0.38 (1). Related literature For the coordination chemistry of ruthenium complexes and their applications, see: Lindner, Mayer et al. (2003); Noyori (1994, 2003); Ohkuma et al. (2002); Lindner et al. (2005); Noyori & Ohkuma (2001); Lindner, Warad et al. (2003). For evidence of intra- and intermolecular interactions in similar complexes, see: Warad (2007, 2010). Experimental Crystal data [RuCl 2 (C 6 H 14 N 2 )(C 28 H 28 P 2 )]- CH 2 Cl 2 M r = 797.53 Monoclinic, P2 1 =c a = 12.419 (7) A ˚ b = 19.722 (10) A ˚ c = 17.588 (7) A ˚  = 123.25 (3)  V = 3603 (3) A ˚ 3 Z =4 Mo K radiation  = 0.85 mm 1 T = 296 K 0.28  0.17  0.09 mm Data collection Enraf–Nonius CAD-4 diffractometer 9791 measured reflections 8141 independent reflections 6777 reflections with I >2(I) R int = 0.028 2 standard reflections every 120 min intensity decay: none Refinement R[F 2 >2(F 2 )] = 0.050 wR(F 2 ) = 0.135 S = 1.03 8141 reflections 413 parameters 5 restraints H atoms treated by a mixture of independent and constrained refinement Á max = 0.95 e A ˚ 3 Á min = 0.97 e A ˚ 3 Table 1 Hydrogen-bond geometry (A ˚ ,  ). Cg1 and Cg2 are the centroids of the C1–C6 and C22–C27 rings, respectively. D—HA D—H HA DA D—HA N1—H1ACl2 0.85 (1) 2.40 (3) 2.983 (4) 125 (3) N2—H2BCl1 i 0.90 2.62 3.390 (3) 143 C3—H3ACl2 i 0.93 2.80 3.601 (5) 144 C9—H9ACl4A ii 0.93 2.83 3.492 (9) 130 C12—H12AN1 0.93 2.51 3.305 (5) 144 C13—H13ACl1 0.97 2.76 3.383 (5) 123 C18—H18ACl1 0.93 2.76 3.499 (5) 137 C18—H18ACl2 0.93 2.79 3.361 (5) 121 C35A—H35ACl2 i 0.97 2.57 3.520 (8) 167 N2—H2ACg1 0.90 2.74 3.612 164 C26—H26ACg2 iii 0.93 2.78 3.577 142 Symmetry codes: (i) x; y; z; (ii) x  1; y þ 1 2 ; z  1 2 ; (iii) x; y  1 2 ; z  1 2 . Data collection: CAD-4 EXPRESS (Enraf–Nonius, 1994); cell refinement: CAD-4 EXPRESS; data reduction: XCAD4 (Harms & Wocadlo, 1995); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997) and DIAMOND (Brandenburg & Putz, 2005); software used to prepare material for publication: WinGX (Farrugia, 1999). metal-organic compounds Acta Cryst. (2012). E68, m563–m564 doi:10.1107/S1600536812014080 Ismail Warad m563 Acta Crystallographica Section E Structure Reports Online ISSN 1600-5368 ‡ Department of Chemistry, King Saud University PO Box 2455, Riyadh 11451, Saudi Arabia.