The manganese(III)-containing tungstophosphate [Mn3III(H2O)5(A-α-PW9O34)]9-
The manganese(III)-containing tungstophosphate [Mn3III(H2O)5(A-α-PW9O34)]9-
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DOI：
10.1016/j.poly.2012.08.050
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发表时间：
2013-03-22
期刊：
影响因子：
2.6
通讯作者：
Kortz, Ulrich
中科院分区：
文献类型：
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作者：
Al-Oweini, Rami;Bassil, Bassem S.;Kortz, Ulrich
在酸性水溶液中，[(Mn8Mn4O12)-Mn-III-O-IV(CH3COO)(16)(H2O)(4)]与[A-α-PW9O34](9-)以1：2的摩尔比反应生成了含锰(III)的夹心型磷钨酸盐[Mn-3(III)(H-2-O)(5)(A-α-PW9O34)(2)](9-)(1)。聚阴离子1结晶为K/Cs/Gu混合盐，晶胞参数a=13.1718(19)埃，b=16.505(2)埃，c=22.842(4)埃，α=104.141(7)度，β=106.267(8)度，伽马=101.369(6)度，V=4430.6(12)埃(3)，Z=2。标题多阴离子由两个通过三个Mn-III离子连接的[A-α-PW9O34](9-)Keggin片段组成，其中两个是6配位的，一个是5配位的。通过红外光谱、热重分析、元素分析、磁性测量和电化学等手段对聚阴离子1进行了表征。(C)2012爱思唯尔有限公司。保留所有权利。
Reaction of [(Mn8Mn4O12)-Mn-III-O-IV(CH3COO)(16)(H2O)(4)] with [A-alpha-PW9O34](9-) in a 1:2 molar ratio in aqueous, acidic medium resulted in the manganese(III)-containing, sandwich-type tungstophosphate [Mn-3(III)(H-2-O)(5)(A-alpha-PW9O34)(2)](9-) (1). Polyanion 1 crystallizes as a mixed potassium/cesium/guanidinium salt in the triclinic space group P (1) over bar, with cell parameters a = 13.1718(19) angstrom, b = 16.505(2) angstrom, c = 22.842(4) angstrom, alpha = 104.141(7)degrees, beta = 106.267(8)degrees, gamma = 101.369(6)degrees, V = 4430.6(12) angstrom(3), and Z = 2. The title polyanion comprises two [A-alpha-PW9O34](9-) Keggin fragments linked via three Mn-III ions, two of which are 6-coordinated and one is 5-coordinated. Polyanion 1 was further characterized by IR, TGA, elemental analysis, magnetic measurements, and electrochemistry. (C) 2012 Elsevier Ltd. All rights reserved.