Sodium Transition Metal Vanadates from Hydrothermal Brines: Synthesis and Characterization of NaMn4(VO4)3, Na2Mn3(VO4)3, and Na2Co3(VO4)2(OH)2

被引:7
作者
Pellizzeri, Tiffany M. Smith [1 ,2 ,3 ]
Morrison, Gregory [4 ]
McMillen, Colin D. [1 ,2 ]
zur Loye, Hans-Conrad [4 ]
Kolis, Joseph W. [1 ,2 ,5 ]
机构
[1] Clemson Univ, Dept Chem, Clemson, SC 29634 USA
[2] Clemson Univ, Ctr Opt Mat Sci & Engn Technol COMSET, Clemson, SC 29634 USA
[3] Eastern Illinois Univ, Dept Chem & Biochem, Charleston, IL 61920 USA
[4] Univ South Carolina, Dept Chem & Biochem, Columbia, SC 29208 USA
[5] 485 HL Hunter Labs, Clemson, SC 29634 USA
基金
美国国家科学基金会;
关键词
Hydrothermal; Crystal growth; Vanadates; Transition metals; Sodium vanadates; Alkali vanadates; Magnetic properties; MAGNETIC-PROPERTIES; CRYSTAL-STRUCTURE; MANGANESE VANADATES; SALT-INCLUSION; SPIN; CHEMISTRY; GROWTH; CS;
D O I
10.1002/ejic.202000518
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Three new examples of transition metal vanadates have all been synthesized by a related hydrothermal synthetic route using variations of sodium hydroxide/sodium chloride brines as mineralizers. Compound1, NaMn4(VO4)(3), is built from equivalent interlocking chains of Mn(2+)edge shared octahedra, further coordinated to one another by (VO4)(3-)vanadate groups to form a three-dimensional structure. Compound2, Na2Mn3(VO4)(3), forms a complex three-dimensional structure of mixed-valence 2+/3+ manganese edge-sharing octahedra forming chains, with (VO4)(3-)tetrahedra acting as space-fillers in the structure. Structure3, Na2Co3(VO4)(2)(OH)(2), is built of a two-dimensional distorted honeycomb of edge shared Co(2+)layers decorated by, but not connected by, vanadate groups. The layers bear a relationship to Kagome nets but the structure contains no ideal trigonal symmetry. All compounds were characterized by single-crystal X-ray diffraction. Compounds1and3were characterized by magnetic susceptibility. The magnetic susceptibility of1displays the moment characteristic of Mn(2+)and a transition at 46 K to a spin canted antiferromagnet. Compound3shows evidence of spin-orbit coupling in the Co(2+)ions with antiferromagnetic ordering at 4.4.K and highly anisotropic field-dependent behavior with multiple metamagnetic transitions.
引用
收藏
页码:3408 / 3415
页数:8
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