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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Organo-functionalized metal–oxide clusters: synthesis and characterization of the reduced cationic species [NaV~(IV)_6O_6{(OCH_2CH_2)_2NH}_6]~+
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Organo-functionalized metal–oxide clusters: synthesis and characterization of the reduced cationic species [NaV~(IV)_6O_6{(OCH_2CH_2)_2NH}_6]~+

机译：有机功能化的金属氧化物簇：还原型阳离子[NaV〜（IV）_6O_6 {（OCH_2CH_2）_2NH} _6]〜+的合成与表征

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摘要

A new heteropolyoxovanadium compound, [NaV_6O_6{(OCH_2CH_2)_2NH}_6]·(OH)_(0.5)Cl_(0.5)· 3(H_2O), was synthesized and characterized by single-crystal X-ray diffraction analysis, cyclic voltammetry, FTIR and UV-vis spectroscopy, and TGA. [NaV_6O_6{(OCH_2CH_2)_2NH}_6]·(OH)_(0.5)Cl_(0.5)·3(H_2O) contains the diethanolamine functionalized oxovanadium cationic cluster, [NaV~(IV)_6O_6{(OCH_2CH_2)_2NH}_6]~+. The cluster cation is composed of a fully reduced cyclic {NaV_6N_6O_(18)} framework which adopts an Anderson-like structure and is comprised of a ring of six edge-sharing {VO_5N} octahedra linked to a central {NaO_6} unit. Two (OCH_2CH_2~–) arms of each of the six diethanolamine ligands are incorporated into the oxometalate core. FTIR spectra are consistent with the presence of expected V＝O_t stretching modes and functionalization with diethanolamine. Electrochemical and UV-vis absorption properties are consistent with two distinct MLCT processes: the characteristic V＝O_t dπ–pπ interaction, and a second process occurring through the hydrogen-terminated nitrogen atoms (V–N–H) of the octahedra forming the cyclic {NaV_6N_6O_ (18) core.
机译：合成了一种新的杂多氧钒钒化合物[NaV_6O_6 {（OCH_2CH_2）_2NH} _6]·（OH）_（0.5）Cl_（0.5）·3（H_2O），并通过单晶X射线衍射分析，循环伏安法， FTIR和紫外可见光谱，以及TGA。 [NaV_6O_6 {（OCH_2CH_2）_2NH} _6]·（OH）_（0.5）Cl_（0.5）·3（H_2O）包含二乙醇胺官能化的氧钒阳离子簇，[NaV〜（IV）_6O_6 {（OCH_2CH_2）_2NH} _6] 〜+。簇阳离子由完全还原的环状{NaV_6N_6O_（18）}框架组成，该框架采用类似安德森的结构，由与中央{NaO_6}单元连接的六个边缘共享{VO_5N}八面体的环组成。六个二乙醇胺配体中的每一个的两个（OCH_2CH_2〜–）臂都被引入到金属氧酸盐核心中。 FTIR光谱与预期的V ＝ O_t拉伸模式的存在和二乙醇胺的官能化相一致。电化学和紫外可见吸收特性与两个不同的MLCT过程一致：特征性的V ＝ O_t dπ–pπ相互作用，以及第二个过程，通过八面体的氢封端的氮原子（V–N–H）形成环状{NaV_6N_6O_（18）核心。

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