Convenient syntheses and structural characterizations of mono-substituted alkylimido hexamolybdates: [Mo6O18(NR)]2- (R = Me, Et, n-Pr, i-Pr, n-Bu, t-Bu, Cy, Hex, Ode).
Convenient syntheses and structural characterizations of mono-substituted alkylimido hexamolybdates: [Mo6O18(NR)]2- (R = Me, Et, n-Pr, i-Pr, n-Bu, t-Bu, Cy, Hex, Ode).
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DOI：
10.1039/b813924e
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发表时间：
2009-02
影响因子：
4
通讯作者：
Qiang Li;Longsheng Wang;Panchao Yin;Yongge Wei;J. Hao;Yulin Zhu;Li Zhu;G. Yuan
中科院分区：
文献类型：
--
作者：
Qiang Li;Longsheng Wang;Panchao Yin;Yongge Wei;J. Hao;Yulin Zhu;Li Zhu;G. Yuan
六钼酸盐的单官能化烷基亚氨基衍生物，（Bu（4）N）（2）[Mo（6）O（18）]（与N-R相同）]（R =甲基，Me;乙基，Et;正丙基，n-Pr;异丙基，i-Pr;正丁基，n-Bu;叔丁基，t-Bu;环己基，Cy;正己基，Hex;和正十八烷基，Ode），以高纯度和良好的产率通过[Bu（4）N]（4）[α-Mo（8）O（26）]与适当的脂肪胺盐酸盐在无水乙腈中反应，使用N，N '-二环己基碳二亚胺（DCC）作为脱水剂。通过单晶X射线衍射分析确定了8个化合物的结构，并对所有化合物进行了（1）H-NMR、IR、UV-vis、ESI质谱和循环伏安法的研究。结构和（1）H-NMR研究表明，与其他位置的氢原子相比，六钼酸盐的烷基亚氨基衍生物的β氢原子具有较强的布朗斯台德酸性。
Monofunctionalized alkylimido derivatives of hexamolybdate, (Bu(4)N)(2)[Mo(6)O(18)( identical withN-R)] (R = methyl, Me; ethyl, Et; n-propyl, n-Pr; i-propyl, i-Pr; n-butyl, n-Bu; t-butyl, t-Bu; cyclohexyl, Cy; n-hexyl, Hex; and n-octadecyl, Ode), have been prepared in high purity and good yield by the reaction of [Bu(4)N](4)[alpha-Mo(8)O(26)] with appropriate aliphatic amine hydrochlorides in anhydrous acetonitrile, using N,N'-dicyclohexylcarbodiimide (DCC) as the dehydrating agent. Eight compounds have been determined by single crystal X-ray diffraction analysis and all compounds have been studied with (1)H-NMR, IR, UV-vis, ESI mass spectrometry and cyclic voltammetry. A structural and (1)H-NMR study show beta hydrogen atoms of those alkylimido derivatives of hexamolybdate have strong Brønsted acidity compared to the hydrogen atoms in other positions.