Pouye Serigne Fallou, Cisse Ibrahima, Diop Libasse, Dolmella Alessandro, Bernès Sylvain
Laboratoire de Chimie Minérale et Analytique, Département de Chimie, Faculté des Sciences et Techniques, Université Cheikh Anta Diop, Dakar, Senegal.
Universita di Padova, Dipartimento di Scienze del Farmaco RMXS, Laboratorio di Radiofarmacia, Modellistica Molecolare e Diffrattometria a Raggi X, Via Francesco Marzolo 5, 35131, Padova, Italy.
Acta Crystallogr E Crystallogr Commun. 2017 Jun 13;73(Pt 7):1033-1036. doi: 10.1107/S2056989017008519. eCollection 2017 Jul 1.
In the previously reported [CO(SnPh)] complex [Diop (2003 ▸). , 881-882.], the Sn atoms are able to formally complete their coordination by addition of dimethyl sulfoxide (DMSO) mol-ecules provided by the reaction medium, affording the title complex, [Sn(CH)(CO)(CHOS)]. The Sn atoms are then penta-coordinated, with a common trigonal-bipyramidal arrangement. The asymmetric unit contains one half-mol-ecule, which is completed by inversion symmetry in space group type 2/. The inversion centre is placed at the mid-point of the central bis-monodentate oxalate dianion, CO, which bridges the [(SnPh)(DMSO)] moieties. The mol-ecule crystallizes as a disordered system, with two phenyl rings disordered by rotation about their Sn-C bonds, while the DMSO mol-ecule is split over two positions due to a tetra-hedral inversion at the S atom. All disordered parts were refined with occupancies fixed of 0.5.
在先前报道的[CO(SnPh)]配合物[Diop (2003 ▸).,, 881 - 882.]中，锡原子能够通过反应介质提供的二甲基亚砜（DMSO）分子正式完成其配位，得到标题配合物[Sn(CH)(CO)(CHOS)]。然后锡原子为五配位，具有常见的三角双锥构型。不对称单元包含半个分子，通过空间群类型2/中的反演对称性得以完整。反演中心位于中心双单齿草酸根二价阴离子CO的中点，该阴离子桥连[(SnPh)(DMSO)]部分。该分子以无序体系结晶，两个苯环围绕其Sn - C键旋转而无序，而DMSO分子由于S原子处的四面体反转而分布在两个位置。所有无序部分均以占有率固定为0.5进行精修。
