Bis{μ-1,4-bis[(diphenylphosphanyl)ethynyl]benzene-κ2P:P′}bis[trans-diiodidopalladium(II)] chloroform trisolvate

✍ Scribed by Chan, Wing Yan ;Baumgartner, Thomas ;Lough, Alan J. ;Manners, Ian

• Publisher: International Union of Crystallography
• Year: 2007
• Tongue: English
• Weight: 382 KB
• Volume: 63
• Category: Article
• ISSN: 1600-5368
• DOI: 10.1107/s160053680704620x

✦ Synopsis

The title compound, [Pd 2 I 4 (C 34 H 24 P 2 ) 2 ]Á3CHCl 3 , was obtained from the direct reaction of PdI 2 with 1,4-bis[(diphenylphosphanyl)ethynyl]benzene. The dimer complex molecule is centrosymmetric, with each Pd II atom in a slightly distorted square-planar coordination geometry.

Related literature

Metal-containing rings are currently of interest as polymer precursors (Nguyen et al., 1999;Herbert et al., 2007). We have also determined the structure of a triclinic modification of the title compound (Baumgartner et al., 2007). A related complex containing Pt II atoms and chloride ligands was found to form a triangle (Baumgartner et al., 2002).

Experimental

Crystal data [Pd 2 I 4 (C 34 H 24 P 2 ) 2 ]Á3CHCl 3 M r = 2067.45 Monoclinic, C2=c a = 20.8960 (9) A b = 9.5920 (5) A c = 38.832 (2) A = 99.804 (3) V = 7669.6 (7) A ˚3 Z = 4 Mo K radiation = 2.52 mm À1 T = 150 (1) K 0.14 Â 0.06 Â 0.02 mm Data collection Nonius KappaCCD diffractometer Absorption correction: multi-scan (SORTAV; Blessing, 1995) T min = 0.827, T max = 0.958 19576 measured reflections 6672 independent reflections 3732 reflections with I > 2(I) R int = 0.086 Refinement R[F 2 > 2(F 2 )] = 0.056 wR(F 2 ) = 0.112 S = 1.01 6672 reflections 411 parameters 4 restraints H-atom parameters constrained Á max = 1.06 e A ˚À3 Á min = À0.91 e A ˚À3