The precursor to ligand 1, 1,4-bis(2-bromoethyl benzene (2), also surprisingly forms an extended structure with SbCl3 even though it lacks the thiol groups of 1 or any basic donor group (Scheme 1). When a CHCl3 solution of 2 was added to a CHCl3 solution of SbCl3, single crystals of 2 2SbCl3 formed in two weeks. The structure of 2 2SbCl3 (Figure 2) reveals a coordination network similar to that of 1 2SbCl3. While 1 2SbCl3 forms a 1D network,the 2 2SbCl3 network is two-dimensional (2D) with two Sb Br SBIs in place of the Sb S interaction thus creating a 7 coordinate antimony center. The SBI distances in 2 2SbCl3 are slightly longer than those in 1 2SbCl3: the Sb-π distance is 3.28 Å (Sb to arene centroid), the Sb Br distances are 3.61 and 3.74 Å, and the Sb Cl distance is 3.51 Å. Each antimony atom participates in SBIs with two bromine atoms, a chlorine atom from a neighboring SbCl3 molecule, and the arene ring. In addition, the Sb Cl bond is normal to, but not centered over, the ring face (as it is in 1 2SbCl3) resulting in a typical η3 bonding interaction between antimony and the arene ring.

  翻译：即使在缺少巯基或其他给电子集团的条件下，配体化合物1的先驱体（1,4-二（2-溴乙基）苯（2））仍能与SbCl₃形成扩展结构。当配体2的氯仿溶液加入SbCl₃的氯仿溶液时，两个星期可以形成单晶2﹡2SbCl3。单晶2­2SbCI₃形成的网状结构类似于配合物1­2SbCI₃，只不过1是形成一维网状物，2是形成二维网状物，由2个Sb­Br键取代了Sb­-S的相互作用，形成一个7配位的锑中心。化合物2­2 SbCI₃的二级氢键的长度略大于1­2SbCI₃的，Sb-Π键长是3.28Å，Sb­-Br 键长是3.61 Å和3.74 Å，Sb­Cl键长是3.51 Å。 每个锑原子与2个溴原子，1个出自相邻SbCl₃的氯原子以及苯环参与形成二级氢键作用力。此外，锑氯二级键是法向对齐的，但不是指向芳环中心。在锑与芳环之间的环平面产生一个经典的η³键作用。

   In summary, two coordination networks were synthesized and structurally characterized with analogous thiol and bromide ligands. Both of these networks contain SBIs similar to those described in in SbX3-thioether and SbX3-thioamide networks, but the present structures also incorporate Sb-π interactions into the framework. In both structures, the arene rings interact with an SbCl3 molecule on both sides of the aromatic ring; such “inverted sandwich” structures are quite rare for Sb(III) π-com-plexes. Structure 1 is a unique solid-state example of a thiol bound to SbCl3 through a SBI rather than direct coordination by a thiolate ligand, and it represents a very rare example of the contribution of three different weak intermolecular forces to the formation of a coordination polymer. This provides further evidence that SBIs of main group ions provide a suf?cient stabilizing force for supramolecular organization. Further investigation of these and similar systems are being carried out to determine the generality of the formation of these networks.

  翻译：总之，两种网状配合物被合成出来，结构特点是有类巯基和溴配体。这两种配合物含有的二级氢键作用力与那些三卤素化锑和硫醚或硫代酰胺网状物所表征出来的相似，但这两种配合物的当前结构也把Sb-Π键加入到骨架构建中了。在这两种配合物结构中，芳香环跟一个锑原子在其两侧均相互作用。这种“倒三明治”结构在锑（ⅲ）π-复合物中很少见。结构1是一个独特的固态晶体的例子，它由巯基与SbCl₃通过二级键作用力形成而不是由巯基直接配对形成，提供了一个少见的由三种弱分子间作用力构建的大分子配合物。也证明了主要官能团的二级氢键作用力可以提供超分子结构稳定所需的充足的作用力。为判断这种网状物的形成的普遍性，此系统和相似的系统进一步研究工作将会继续进行。