Ou Guang-Chuan, Zhou Qiang, Ng Seik Weng
Acta Crystallogr Sect E Struct Rep Online. 2009 Jun 6;65(Pt 7):m728. doi: 10.1107/S1600536809020662.
In the crystal structure of the title dinuclear compound, Ni(2)(C(4)H(4)O(5))(C(16)H(36)N(4))(2)(2)·H(2)O, the bridg-ing di-car-box-yl-ate dianion O,O'-chelates to two Ni atoms, both of which are also chelated by the N-macrocylic ligand. The Ni atoms exhibit a distorted octa-hedral coordination. N-H⋯O and O-H⋯O hydrogen bonds link the cations and the uncoordinated water mol-ecules into a layer structure; the perchlorate anions occupy the space between adjacent layers, and are only weakly linked to the layers. One of the perchlorate anions is disordered over two sets of sites in a 3:2 ratio.
在标题双核化合物Ni₂(C₄H₄O₅)(C₁₆H₃₆N₄)₂₂·H₂O的晶体结构中，桥连二羧酸根二价阴离子通过O,O'-螯合与两个Ni原子相连，这两个Ni原子也均被大环N配体螯合。Ni原子呈现出扭曲的八面体配位。N-H⋯O和O-H⋯O氢键将阳离子和未配位的水分子连接成层状结构；高氯酸根阴离子占据相邻层之间的空间，并且仅与这些层存在弱连接。其中一个高氯酸根阴离子在两组位置上无序分布，比例为3:2。
