Synthesis, structures and magnetic properties of a family of nitrate-bridged octanuclear [Na2Ln6] (Ln = Dy, Tb, Gd, Sm) complexes

Shixiong She, Yanmei Chen, Michael J. Zaworotko, Wei Liu, Yanyuan Cao, Jian Wu, Yahong Li

Research output: Contribution to journalArticlepeer-review

Abstract

A new family of octanuclear lanthanide compounds [Na2Ln 6L8(C6H4NH2COO) 2(C2H5OH)2(H2O) 4(NO3)]·NO3·C2H 5OH·nH2O [H2L = 2-{[(2-hydroxy-3- methoxyphenyl)methylidene]amino}benzoic acid; Ln = Dy (1) (n = 15); Tb (2), Gd (3) (n = 14); Sm (4) (n = 16)] have been prepared under hydrothermal conditions. The X-ray crystal structure analysis reveals that complexes 1-4 are isomorphous. The core of the structure is a [4 + 2] combination of an Ln 4 cubane and an Ln2 unit. The two units are bridged by a nitrate ion, which is located in the center of the cluster and displays an unusual μ8224 tridentate bridging mode. The magnetic studies for complex 1 show that the [Na2Dy6] unit exhibits slow magnetic relaxation behavior.

Original languageEnglish
Pages (from-to)10433-10438
Number of pages6
JournalDalton Transactions
Volume42
Issue number29
DOIs
Publication statusPublished - 2013
Externally publishedYes

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