Crystal Structure and Preferential Site Occupancy in Cs6Mn(H2O)2(VO3)8 and Cs5KMn(H2O)2(VO3)8

被引：3
|
作者：
Pellizzeri, Tiffany M. Smith [1 ,2 ]
McMillen, Colin D. [1 ,2 ]
Ivey, Kimberly [3 ]
Kolis, Joseph W. [1 ,2 ]
机构：
[1] Clemson Univ, Dept Chem, 485 HL Hunter Labs, Clemson, SC 29634 USA
[2] Clemson Univ, Ctr Opt Mat Sci & Engn Technol COMSET, 485 HL Hunter Labs, Clemson, SC 29634 USA
[3] Clemson Univ, Dept Mat Sci & Engn, Clemson, SC 29634 USA
来源：
JOURNAL OF CHEMICAL CRYSTALLOGRAPHY | 2019年 / 49卷 / 03期
基金：
美国国家科学基金会;
关键词：
Hydrothermal synthesis; Metal vanadates; Brine mineralizers; Transition metal; HYDROTHERMAL SYNTHESIS; MANGANESE VANADATES; CHEMISTRY; GROWTH;
D O I：
10.1007/s10870-019-00787-4
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
Two new structurally related cesium manganese vanadates have been synthesized by a high-temperature (580 degrees C) hydrothermal synthetic method utilizing halide brine mineralizers. Both structures Cs6Mn(H2O)(2)(VO3)(8) (I) and Cs5KMn(H2O)(2)(VO3)(8) (II) are isostructural crystallizing in the tetragonal space group P4/mnc. The first structure, Cs6Mn(H2O)(2)(VO3)(8) (I) has unit cell dimensions of a=13.6830(4)angstrom, c=8.6476(3)angstrom and the second structure, Cs5KMn(H2O)(2)(VO3)(8) (II), has unit cell dimensions of a=13.5015(4)angstrom, c=8.5372(3)angstrom. The structures are built from a manganese vanadate chain, which consists of [Mn(H2O)(2)O-4] units that are coordinated to one another by a unique sinusoidal vanadate chain, (VO3)(n). Both structures have well-ordered alkali metal atoms, with the potassium atoms of II exhibiting preferential site occupancy. Both compounds were characterized by single crystal X-ray diffraction and infrared spectroscopy, to identify the characteristic O-H and V-O modes.
引用
收藏
页码：186 / 192
页数：7
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