Temel Ersin, Erer Hakan, Yeşilel Okan Zafer, Büyükgüngör Orhan
Acta Crystallogr Sect E Struct Rep Online. 2009 Jun 6;65(Pt 7):m735-6. doi: 10.1107/S160053680902087X.
The asymmetric unit of the title compound, Ni(C(3)H(10)N(2))(2)(H(2)O)(2)·4H(2)O, contains one-half of the diaqua-bis(1,3-propane-diamine)nickel(II) cation, one-half of the centrosymmetric squarate anion and two uncoordinated water mol-ecules. In the cation, the Ni(II) atom is located on a crystallographic inversion centre and has a slightly distorted octa-hedral coordination geometry. The six-membered chelate ring adopts a chair conformation. O-H⋯O hydrogen bonds link the cation and anion through the water mol-ecule, while N-H⋯O hydrogen bonds link the cation and anion and cation and water mol-ecules. In the crystal structure, inter-molecular O-H⋯O and N-H⋯O hydrogen bonds link the mol-ecules into a three-dimensional network structure.
标题化合物Ni(C₃H₁₀N₂)₂(H₂O)₂·4H₂O的不对称单元包含半个二水合双(1,3 - 丙二胺)镍(II)阳离子、半个中心对称的方酸根阴离子和两个未配位的水分子。在阳离子中，Ni(II)原子位于晶体学反演中心，具有略微扭曲的八面体配位几何构型。六元螯合环呈椅式构象。O—H⋯O氢键通过水分子连接阳离子和阴离子，而N—H⋯O氢键连接阳离子与阴离子以及阳离子与水分子。在晶体结构中，分子间的O—H⋯O和N—H⋯O氢键将分子连接成三维网络结构。
