Triaqua(pyridine-2,6-dipicolinato-O,N,O′)- iron(III) bis(pyridine-2,6-dipicolinato-O,N,O′)iron(III) hexahydrate:: An unusual ion-pair compound

被引:17
作者
Abboud, KA [1 ]
Xu, C [1 ]
Drago, RS [1 ]
机构
[1] Univ Florida, Dept Chem, Gainesville, FL 32611 USA
关键词
D O I
10.1107/S0108270198000183
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The reaction of dipicolinicacid (2,6-pyridinedicarboxylic acid) with FeCl3 results in the unusual title ion-pair compound, [Fe(C7H3NO4)(H2O)(3)][Fe(C7H3NO4)(2)].6H(2)O. Each Fe atom has an octahedral geometry. The dipicolinate ligands are nearly planar, with the two in the anion being perpendicular to each other and displaying a dihedral angle of 93.74(6)degrees, The Fe-O(carboxylate) bond distances are comparable and range from 2.008 (2) to 2.028 (2) Angstrom, while the Fe-N distances are 2.059 (2), 2.054 (2) and 2.054 (2) Angstrom. The Fe-O(water) distances are 1,971 (2), 1.987 (2) and 2.004 (2) Angstrom. The cation, anion and water molecules are involved in an extensive three-dimensional hydrogen-bonding network, with O ... O distances ranging from 2.36(2) to 2.953 (3) Angstrom and angles ranging from 129 to 177 degrees.
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页码:1270 / 1272
页数:3
相关论文
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