Department of Chemistry, University of Patras, 265 04 Patras, Greece.
Bioinorg Chem Appl. 2007;2007:51567. doi: 10.1155/2007/51567.
The 12: 1 reaction of urea (U) with CoI(2) in EtOH yielded the "clathrate-coordination" compound [CoU(6)]I2.4U (1). The complex crystallizes in the monoclinic space group P2(1)/c. The lattice constants are a = 9.844(4), b = 7.268(3), c = 24.12(1) A, and beta=98.12(1) degrees composite function. The crystal structure determination demonstrates the existence of octahedral CoU6 cations, I(-) counterions, and two different types (two U(1) and two U(2)) of hydrogen-bonded, lattice urea molecules. The CoU(6) cations and the U(1) lattice molecules form two-dimensional hydrogen-bonded layers which are parallel to the ab plane. The I(-) anions are placed above and below each layer, and are hydrogen bonded both to U(1) molecules and CoU(6) cations. Each U(2) molecule is connected to a CoU(6) cation through an N-Hcdots, three dots, centeredO hydrogen bond resulting in a three-dimensional network. Room temperature magnetic susceptibility and spectroscopic (solid-state UV/Vis, IR, Raman) data of 1 are discussed in terms of the nature of bonding and the known structure.
尿素（U）与 CoI（2）在 EtOH 中的 12:1 反应生成了“笼状配位”化合物[CoU（6）]I2.4U（1）。该配合物在单斜空间群 P2(1)/c 中结晶。晶格常数为 a = 9.844(4)，b = 7.268(3)，c = 24.12(1) A，β=98.12(1)°。晶体结构测定表明存在八面体CoU6阳离子、I(-)阴离子和两种不同类型（两个 U(1)和两个 U(2)）的氢键、晶格尿素分子。CoU(6)阳离子和 U(1)晶格分子形成二维氢键层，平行于 ab 平面。I(-)阴离子位于每个层的上下方，与 U(1)分子和CoU(6)阳离子均形成氢键。每个 U(2)分子通过 N-H···，三点， centeredO 氢键与CoU(6)阳离子相连，形成三维网络。讨论了 1 的室温磁感性和光谱（固态 UV/Vis、IR、Raman）数据，以讨论键的性质和已知结构。
