摘要
合成了砷钼夹心型化合物Na5[(CH3)4N]3(H3O)2[Co2(AsVMo9O33)2]·8H2O,用X-射线单晶衍射、元素分析和红外光谱对晶体的结构进行了表征.结构表征指出该化合物是由砷钼夹心型[Co2(AsVMo9O33)2]10-多阴离子,(CH3)4N+反荷阳离子,Na+反荷阳离子和结晶水分子构成.通过离子键及抗衡阳离子Na+的弱配位键连接形成了二维层状结构.变温磁化率测试显示该化合物中双核钴中心之间存在较弱的反铁磁性相互作用.
A new heteropolymolybdate Na5[(CH3)4N]3(H3O)2[Co2(AsVMo9O33)2]·8H2O,constructed from fragment(AsVMo9O33)7-and transition metal,has been synthesized in aqueous solution and characterized by elemental analysis,IR spectroscopy,thermal gravimetric analysis,and single-crystal X-ray diffraction.Crystal data:Triclinic,Pī,a=1.329 43(14) nm,b=1.667 51(18) nm,c= 2.513 2(3) nm,α=70.636 0(10)°,β=123.67(3)°,γ=71.581 0(10)°,V=4.945(9) nm3,Z=2,R1=0.122 4,wR2=0.173 4.The magnetic properties were investigated to indicate antiferromagnetic interactions through the Co(Ⅱ)—O—Co(Ⅱ) bridge unit for the complex.
出处
《分子科学学报》
CAS
CSCD
北大核心
2011年第6期382-385,共4页
Journal of Molecular Science
基金
国家自然科学基金资助项目(20971019)
关键词
夹心化合物
多钼酸盐
磁性
sandwich compound
polymolybdate
magnetism