Win Yip-Foo, Choong Chen-Shang, Teoh Siang-Guan, Yeap Chin Sing, Fun Hoong-Kun
Acta Crystallogr Sect E Struct Rep Online. 2011 Aug 1;67(Pt 8):m1114-5. doi: 10.1107/S1600536811028212. Epub 2011 Jul 23.
In the title complex, [Sn(4)(C(4)H(9))(8)(C(7)H(5)N(2)O(4))(4)O(2)], all four Sn(IV) atoms are five-coordinated with distorted trigonal-bipyramidal SnC(2)O(3) geometries. Two Sn(IV) atoms are coordin-ated by two butyl groups, one benzoate O atom and two bridging O atoms, whereas the other two Sn(IV) atoms are coordinated by two butyl groups, two benzoate O atoms and a bridging O atom. All the butyl groups are equatorial with respect to the SnO(3) trigonal plane. In the crystal, mol-ecules are linked into a two-dimensional layer parallel to the ab plane by inter-molecular N-H⋯O and C-H⋯O hydrogen bonds and further stabilized by a π-π inter-action [centroid-centroid distance = 3.6489 (11) Å]. Intra-molecular N-H⋯O and C-H⋯O hydrogen bonds stabilize the mol-ecular structure. Two of the butyl groups are each disordered over two sets of sites with site-occupancy ratios of 0.510 (4):0.490 (4) and 0.860 (5):0.140 (5).
在标题配合物[Sn₄(C₄H₉)₈(C₇H₅N₂O₄)₄O₂]中，所有四个Sn(IV)原子均为五配位，具有扭曲的三角双锥SnC₂O₃几何构型。两个Sn(IV)原子由两个丁基、一个苯甲酸酯O原子和两个桥连O原子配位，而另外两个Sn(IV)原子由两个丁基、两个苯甲酸酯O原子和一个桥连O原子配位。所有丁基相对于SnO₃三角平面均处于赤道位置。在晶体中，分子通过分子间的N-H⋯O和C-H⋯O氢键连接成平行于ab平面的二维层，并通过π-π相互作用[质心-质心距离 = 3.6489 (11) Å]进一步稳定。分子内的N-H⋯O和C-H⋯O氢键稳定了分子结构。其中两个丁基各自在两组位置上无序分布，占位比分别为0.510 (4):0.490 (4)和0.860 (5):0.140 (5)。
