Sterically Controlled Esterification on Bis(μ-hydroxo) Dioxovanadium Site in γ-H2SiV2W10O404-

Sterically Controlled Esterification on Bis(μ-hydroxo) Dioxovanadium Site in γ-H2SiV2W10O404-
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DOI:
10.1021/ic0483388
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发表时间:
2005-01
影响因子:
4.6
通讯作者:
Y. Nakagawa;Kazuhiro Uehara;N. Mizuno
Y. Nakagawa;Kazuhiro Uehara;N. Mizuno
中科院分区:
化学2区
文献类型:
--
作者:
Y. Nakagawa;Kazuhiro Uehara;N. Mizuno

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二钒取代的硅钨酸盐γ-H_2SiV_2W_(10)O_(40)~(4-)中的二(μ-羟基)二氧钒中心与醇的酯化反应是空间控制的:几乎不生成仲醇酯和叔醇酯(平衡常数< 0.01),与甲醇的反应有很大的平衡常数(75)。
The esterification of a bis(μ-hydroxo) dioxovanadium site in divanadium-substituted silicotungstate, γ-H2SiV2W10O404-, with alcohols is sterically controlled: The secondary and tertiary alcohol esters are hardly formed (equilibrium constant < 0.01), and a large equilibrium constant of 75 is observed for the reaction with methanol.