STRUCTURAL STUDIES ON THE CESIUM ALUMS, CSMIII[SO4]212H2O
STRUCTURAL STUDIES ON THE CESIUM ALUMS, CSMIII[SO4]212H2O
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DOI：
10.1039/dt9810002105
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发表时间：
1981-01-01
期刊：
影响因子：
--
通讯作者：
WHITE, AH
中科院分区：
文献类型：
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作者：
BEATTIE, JK;BEST, SP;WHITE, AH
用X射线衍射方法测定了铯矾CsMIII[SO_4]_2·12 H_2 O（M = V，Cr，Mn，Fe，Co，Al，Ga，In）在295（1）K时的结构。[M（OH_2）_6]~（3+）物种的MIII-O距离[V-O，1.992（6）; Cr-O，1.959（3）; Mn-O，1.991（6）; Fe-O，1.995（4）; Co-O，1.873（5）; Al-O，1.877（3）; Ga-O，1.944（3）;和In-O，2.112（4）π]，（ii）阳离子中水分子有效配位半径的估计值为1.34 π，（iii）根据水分子在一价阳离子周围的分布，提出了一种新的明矾类型分类标准。
Structure determinations of the caesium alums CsMIII[SO4]2·12H2O, M = V, Cr, Mn, Fe, Co, Al, Ga, or In, have been carried out at 295(1) K by X-ray diffraction methods. The data obtained include (i) MIII–O distances for the metals in the [M(OH2)6]3+ species [V–O, 1.992(6); Cr–O, 1.959(3); Mn–O, 1.991(6); Fe–O, 1.995(4); Co–O, 1.873(5); Al–O, 1.877(3); Ga–O, 1.944(3); and In–O, 2.112(4)Å], (ii) an estimate of 1.34Å for the effective co-ordinated radius for the water molecule in the cation, and (iii) the proposal of a new criterion for the classification of the different alum types, based on the disposition of the water molecules about the univalent cation.