Burgoyne Andrew R, Meijboom Reinout, Muller Alfred, Omondi Bernard O
Research Centre for Synthesis and Catalysis, Department of Chemistry, University of Johannesburg, PO Box 524 Auckland Park, Johannesburg, 2006, South Africa.
Acta Crystallogr Sect E Struct Rep Online. 2011 Aug 1;67(Pt 8):m1092-3. doi: 10.1107/S160053681102616X. Epub 2011 Jul 13.
The title compound, (C(6)H(16)N)[Fe(3)(CH(3)CO(2))(8)O(H(2)O)]·C(7)H(8), was serendipitously crystallized from a reaction of disilanol with iron(II) acetate. The trinuclear acetatoferrate(III) anion has a triethyl-ammonium cation as the counterion. The three Fe atoms lie on the vertices of a regular triangle and are octa-hedrally coordinated. The complete coordination of the anion includes shared ligands among the three metal ions: a central tribridging O atom and six bidentate bridging acetyl groups. The six-coordinations of two of the metal ions are completed by a monodentate acetate ligand, whereas that of the third metal ion is completed by a water mol-ecule. The uncoordinated triethyl-ammonium cation is involved in N-H⋯O hydrogen bonding to a singly coordinated acetyl group. The coordinated aqua mol-ecule is involved in bifurcated O-H⋯O hydrogen bonding. C-H⋯O inter-actions are also observed. The toluene solvent molecule is disordered over two sets of sites in a 0.609 (11):0.391 (11) ratio.
标题化合物（C₆H₁₆N）[Fe₃(CH₃CO₂)₈O(H₂O)]·C₇H₈是在二硅醇与醋酸亚铁的反应中意外结晶得到的。三核醋酸铁（III）阴离子以三乙铵阳离子作为抗衡离子。三个铁原子位于一个正三角形的顶点，呈八面体配位。阴离子的完整配位包括三个金属离子之间共享的配体：一个中心三桥连氧原子和六个双齿桥连乙酰基。其中两个金属离子的六配位由一个单齿醋酸配体完成，而第三个金属离子的六配位由一个水分子完成。未配位的三乙铵阳离子通过N - H⋯O氢键与一个单配位的乙酰基相连。配位的水分子参与了分叉的O - H⋯O氢键作用。还观察到了C - H⋯O相互作用。甲苯溶剂分子在两组位置上无序分布，比例为0.609 (11):0.391 (11)。
