Reactions of 1,13-bis(8-chinolyl)-1,4,7,10,13-pentaoxatridecane (“Cryptand 5”) with HgX2 (X = I, SCN) yield crystals of [(cryptand 5)(HgI2)2] (1) and [(cryptand 5 )2Hg(SCN)2}4] (2), resp. In both complexes two molecules of HgX2 are bound to one ligand molecule. 1 has symmetry Ci with the oxygen atom O(3 ) of the ether chain on a center of symmetry of the unit cell, each Hg atom is bound to the two I atoms, the N atom of the chinolyl residue, and one oxygen atom, O(1) and O(l)i, resp. of the ligand; neighbouring complex units are connected via iodine bridges thus forming chains. In 2 also two formula units of HgX2 are bound to one ligand molecule, but contrary to 1 the complex is not centrosymmetric. The Hg atoms of the two Hg(SCN)2 groups are co-ordinated differently: both are bound via sulphur atoms to two SCN-groups, one being a terminal SCN group, the other acting as a bridge to the Hg atom of a neighbouring complex unit. The first Hg atom is connected to a chinolyl N atom and too oxygen atoms, the second to a chinolyl N atom and three oxygen atoms. There are two independent complex units per asymmetric unit which are related by a non-crystallographic twofold axis, and which are connected via two SCN bridges. These “double molecules” are also interconnected by thiocyanate bridges, thus forming a chain structure
1,13-双(8-喹啉基)-1,4,7,10,13-五氧杂十三烷(“Cryptand 5”)与HgX2(X = I,SCN)的反应产生了[(cryptand 5)(HgI2)2](1)和[(cryptand 5)2Hg(SCN)2}4](2)的晶体。在这两种配合物中,两个分子的HgX2与一个配体分子结合。1具有Ci对称性,醚链的氧原子O(3)位于晶胞的对称中心,每个Hg原子与两个I原子、喹啉基残基的N原子以及配体的一个氧原子O(1)和O(l)i结合。相邻的配合物单元通过碘桥连接形成链。在2中,同样有两个HgX2的配方单位与一个配体分子结合,但与1不同,该配合物不对称。两个Hg(SCN)2基团的Hg原子的配位方式不同:两者均通过硫原子与两个SCN基团结合,一个是末端的SCN基团,另一个作为桥连接到相邻复合物单元的Hg原子。第一个Hg原子连接到一个喹啉基N原子和两个氧原子,第二个连接到一个喹啉基N原子和三个氧原子。每个不对称单元有两个独立的复合物单元,它们通过非晶体学二倍轴相关,并通过两个SCN桥连接。这些“双分子”也通过硫氰酸盐桥连接在一起,形成链状结构。