Date Published: August 01, 2012
Publisher: International Union of Crystallography
Author(s): Xu Huang, Jing Li, Qi-Ming Qiu, Min Liu, Qiong-Hua Jin.
The title complex, [Ag2(C25H22P2)2(C9H7N)2](CF3SO3)2·C9H7N, was prepared by the reaction of silver(I) trifluoromethanesulfonate with isoquinoline and bis(diphenylphosphanyl)methane (dppm). The dinuclear molecule is located about a center of inversion and the AgI atom is coordinated by two dppm P atoms and one isoquinoline N atom, forming an eight-membered metalla ring. In addition, in the asymmetric unit, there is a half-molecule of isoquinoline located about a center of inversion. Since this molecule does not possess this symmetry, for one position in the ring there is superposition of both a C atom of a C—H group and the isoquinoline N atom. In the structure, the Ag—P distances [2.4296 (9) and 2.4368 (9) Å] agree with the corresponding distances in related structures, while the Ag—N bond length [2.489 (3) Å] is slightly longer than that in related structures. On the other hand, the P—Ag—P angle [156.44 (3)°] is much larger than the corresponding angles in related structures. The trifluoromethanesulfonate anions do not coordinate to AgI atoms. As is usually found for these anions, the –CF3 group is disordered over two orientations [occupancies = 0.57 (12) and 0.43 (12)].
For background to silver(I) complexes, see: Bowmaker et al. (1993 ▶); Cui et al. (2010a ▶,b ▶); Jin et al. (2010a ▶,b ▶); Meijboom et al. (2009 ▶); Mu et al. (2010 ▶). For related structures, see: Jin et al. (2008 ▶); Song et al. (2010 ▶); Wu et al. (2009 ▶).