一例四核异金属团簇化合物的合成和表征.doc

文档介绍：
一例四核异金属团簇化合物的合成和表征#
张辉,刘乐诗,尹清,张建军**
(大连理工大学化学学院,大连 116024)
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摘要:本文采用控制水解法,通过甘氨酸配体(HGly)、Cr3+及 Dy3+离子的自组装反应合
成了一例四核 3d-4f 异金属团簇化合物:Na2[Dy3Cr(HGly)6(μ3-OH)4(H2O)9]·(ClO4)10·26H2O
(1),并对其进行了 IR、元素分析、X-射线单晶衍射及磁性分析等表征。化合物 1 属于六方
晶系,R-3 空间群,a=b=(3)Å,c=(10)Å,alpha=beta=90deg,gamma=120deg,
V=12158(4)Å3,Z=6。化合物中的阳离子团簇具有氧桥连 Dy3Cr 畸变四面体构型的金属骨架。
磁性研究实验表明化合物整体表现为铁磁作用,但是交流磁化率没有显示频率依赖现象
关键词:无机化学;Cr-Ln;异金属团簇;四核
中图分类号:
Synthesis and characterization of a tetranuclear
heterometallic pound
ZHANG Hui, LIU Leshi, Yin Qing, ZHANG Jianjun
(School of Chemistry, Dalian University of Technology, Dalian 116024)
Abstract: Based on controlled hydrolysis method, the assembly reaction of glycine (HGly), Cr

3+
20
3+
ions
led to a tetranuclear
3d-4f
heterometallic
cluster
compound,
Na2[Dy3Cr(HGly)6(μ3-OH)4(H2O)9] ·(ClO4)10·26H2O (1), which was also characterized by IR,
elemental analysis and X-ray single crystal diffraction analysis. pound belongs to
hexagonal crystal system, R-3 space group, a=b=(3)Å, c=(10)Å, alpha=beta=90deg,
gamma=120deg, V=12158(4)Å3, Z=6. The cationic cluster has a distorted tetrahedral Dy3Cr metal
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skeleton. ic measurements indicate that 1 displays overall ic interactions but
does not possess frequency dependent on alternating current ic susceptibilities.
Key words: anic Chemistry; Cr-Ln;