Protonated Co(III) Complexes with Ethylenediaminetetraacetic and S-Proline-N-Mono-3-propionic Acids.Crystal Structures of (H_3O)[Co(HEdta)(CN)] centre dot H_2O and [Co(Promp)(HPromp)] centre dot H_2O

qA.L.Poznyak; I.F.Burshtein

首页> 外文期刊>Russian Journal of Coordination Chemistry >Protonated Co(III) Complexes with Ethylenediaminetetraacetic and S-Proline-N-Mono-3-propionic Acids.Crystal Structures of (H_3O)[Co(HEdta)(CN)] centre dot H_2O and [Co(Promp)(HPromp)] centre dot H_2O

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Protonated Co(III) Complexes with Ethylenediaminetetraacetic and S-Proline-N-Mono-3-propionic Acids.Crystal Structures of (H_3O)[Co(HEdta)(CN)] centre dot H_2O and [Co(Promp)(HPromp)] centre dot H_2O

机译：（H_3O）[Co（HEdta）（CN）]中心点H_2O和[Co（Promp）（HPromp）]的晶体结构中心点H_2O

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Crystal structures of [Co(Promp)(Hpromp)] centre dot H_2O (I) (where Promp and Hpromp are deprotonated and monoprotonated anions of S-proline-N-mono-3-propionic acid) and (H_3O)[Co(HEdta)(CN)] centre dot H_2O (II) (where HEdta is monoprotonated anion of ethylenediaminetetraacetic acid).are determined by X-ray diffraction method.The Co coordination octahedron in compound I is formed by two N atoms in trans-positions and by four O atoms of two tridentate ligands,i.e.,anions of H_2Promp acid,one of which is fully deprotonated,while the other one has protonated carboxyl group of a six-membered aminopropionate metal cycle.Neutral [Co(Promp)(Hpromp)] complexes and water molecules are united by hydrogen bonds into chains along 2_1 screw axis.Crystals II consist of the complex anions [Co(Hedta)(CN)]~-,hydroxonium cations,and water molecules.The Co coordination octahedron includes two N atoms and three O atoms of ion of ethylenediaminetetraacetic acid,whose one acetate group is not coordinated but protonated;cyanide ion lies in the NCoN plane.Crystals II contain two types of H_3O~+ions that are involved in hydrogen bonds in different way.

机译：[Co（Promp）（Hpromp）]中心点H_2O（I）（S-脯氨酸-N-单-3-丙酸的Promp和Hpromp为去质子化和单质子化阴离子）和（H_3O）[Co（HEdta [CN]]中心点H_2O（II）（其中HEdta是乙二胺四乙酸的单质子化阴离子）通过X射线衍射法测定。化合物I中的Co配位八面体由两个N原子在转位和两个三齿配体的四个O原子，即H_2Promp酸的阴离子，其中一个被完全去质子化，而另一个已使六元氨基丙酸酯金属循环的羧基质子化。中性[Co（Promp）（Hpromp）]络合物晶体II由络合阴离子[Co（Hedta）（CN）]-，氢氧鎓阳离子和水分子组成。Co配位八面体包括两个N原子和乙二胺四乙酸离子的三个O原子，其中一个乙酸酯基不配位晶体II包含两种类型的H_3O〜+离子，它们以不同的方式参与氢键。

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《Russian Journal of Coordination Chemistry》 |2005年第8期|共10页
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qA.L.Poznyak; I.F.Burshtein;
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Protonated Co(III) Complexes with Ethylenediaminetetraacetic and S-Proline-N-Mono-3-propionic Acids.Crystal Structures of (H_3O)[Co(HEdta)(CN)] centre dot H_2O and [Co(Promp)(HPromp)] centre dot H_2O

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