Sattarzadeh Elham, Mohammadnezhad Gholamhossein, Amini Mostafa M, Ng Seik Weng
Acta Crystallogr Sect E Struct Rep Online. 2009 Jun 6;65(Pt 7):m712-3. doi: 10.1107/S1600536809020157.
In the centrosymmetric title compound, [Zn(4)(C(9)H(6)NO)(6)(C(2)H(3)O(2))(2)]·2H(2)O, the Zn(II) atom that is bonded to one O atom of the acetate group is chelated by a quinolin-8-olate anion. This Zn atom is also bonded to the oxide O atoms of two other quinolin-8-olate anions, which themselves engage in chelation to the other Zn(II) atoms. The Zn(II) atom is five-coordinate in a square-pyramidal coordination geometry. The second Zn(II) atom is six-coordinate as it is linked to two oxide O atoms of the anions that chelate to the acetate-bound metal atom, and is chelated by two quinolin-8-olate ligands. The uncoordinated water mol-ecule is disordered over two positions in a 4:1 ratio. O-H⋯O hydrogen bonds between the water molecules and the free O atoms of the carboxylate groups consolidate the crystal packing.
在中心对称的标题化合物[Zn₄(C₉H₆NO)₆(C₂H₃O₂)₂]·2H₂O中，与乙酸根基团的一个O原子键合的Zn(II)原子被一个喹啉-8-醇根阴离子螯合。该Zn原子还与另外两个喹啉-8-醇根阴离子的氧化物O原子键合，这两个喹啉-8-醇根阴离子本身与其他Zn(II)原子发生螯合作用。Zn(II)原子以四方锥配位几何构型呈五配位。第二个Zn(II)原子为六配位，因为它与螯合到与乙酸根结合的金属原子的阴离子的两个氧化物O原子相连，并被两个喹啉-8-醇根配体螯合。未配位的水分子在两个位置上无序分布，比例为4:1。水分子与羧酸根基团的游离O原子之间的O—H⋯O氢键巩固了晶体堆积。
