Dicopper-substituted polyoxovanadate [Cu2V16O44(NO3)]5− (Cu2V16) was synthesized through the reaction of [Cu2V8O24]4− and [V4O12]4− in the presence of nitrate salt. From single crystal X-ray analysis, Cu2V16 exhibited the same helical structure as that of nitrate-incorporated polyoxovanadate, [V18O46(NO3)]5− (V18). Both complexes had the same framework with the same guest anion and are considered to be substituted isomers for each other by replacing two Cu2+ ions and two [VO]2+ ions. The incorporated nitrate showed short and long N–O bond lengths (1.14, 1.26 and 1.30 Å) as in the case of V18 (1.09, 1.16 and 1.28 Å). Reflecting the inequivalent bond lengths of the nitrate, the IR spectrum of V18 shows split peaks at 1359 and 1342 cm−1. But the Cu2V16 spectrum showed a single peak due to the presence of nitrate at 1353 cm−1. When the temperature was lowered, the nitrate peak in Cu2V16 was split into two positions at 1354 and 1345 cm−1 when the temperature reached −140 °C. These results indicate that the nitrate incorporated in Cu2V16 rotates relatively easily in the Cu2V16 cavity at room temperature compared to V18. In addition, the oxidation of 1-phenyl ethanol to acetophenone with Cu2V16 smoothly proceeded in comparison with V18. By taking advantage of the same framework in both catalysts, we can deduce the position of potential active sites in the oxidation reaction. We have concluded that the most active site is not on the peripheral of the vanadate framework, but it is reasonable to suggest that the active site is on the substituted copper atoms rather than the polyoxovanadate framework.

Isshin Yoshida

Ryoji Mitsuhashi

Yuji Kikukawa

Yoshihito Hayashi

Inorganics

Inorganics is an open access journal that covers all aspects of inorganic chemistry research.   Topics include but are not limited to:    synthesis and characterization of inorganic compounds, complexes and materials  structure and bonding in inorganic molecular and solid state compounds  spectroscopic, magnetic, physical and chemical properties of inorganic compounds  chemical reactivity, physical properties and applications of inorganic compounds and materials  mechanisms of inorganic reactions  organometallic compounds  inorganic cluster chemistry  heterogenous and homogeneous catalytic reactions promoted by inorganic compounds  thermodynamics and kinetics of significant new and known inorganic compounds  supramolecular systems and coordination polymers  bio-inorganic chemistry and applications of inorganic compounds in biological systems and medicine  environmental and sustainable energy applications of inorganic compounds and materials  MD

Inorganics is an open access journal that covers all aspects of inorganic chemistry research. The main topics include, but are not limited to: synthesis and characterization of inorganic compounds, complexes, and materials; structure and bonding in inorganic molecular and solid-state compounds; spectroscopic, magnetic, physical, and chemical properties of inorganic compounds; chemical reactivity, physical properties, and applications of inorganic compounds and materials; mechanisms of inorganic reactions; organometallic compounds; inorganic cluster chemistry; heterogeneous and homogeneous catalytic reactions promoted by inorganic compounds; thermodynamics and kinetics of significant new and known inorganic compounds; supramolecular systems and coordination polymers; bio-inorganic chemistry and applications of inorganic compounds in biological systems and medicine; environmental and sustainable energy applications of inorganic compounds and materials.

《Inorganics》是一本开放获取的期刊，涵盖无机化学研究的各个方面。主要主题包括但不限于：无机化合物、配合物和材料的合成与表征；无机分子和固态化合物的结构与键合；无机化合物的光谱、磁性、物理和化学性质；无机化合物和材料的化学反应性、物理性质及应用；无机反应的机制；有机金属化合物；无机簇化学；由无机化合物促进的异相和同相催化反应；重要新型和已知无机化合物的热力学和动力学；超分子系统和配位聚合物；生物无机化学及无机化合物在生物系统和医学中的应用；无机化合物和材料在环境和可持续能源应用中的作用。

Category	Quartile
化学	4
化学, 无机化学与核化学	4

Synthesis of Copper-Substituted Polyoxovanadate and Oxidation of 1-Phenyl Ethanol

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Category	Quartile
CHEMISTRY, INORGANIC & NUCLEAR	2