A rare-earth metal TCNQ magnet: synthesis, structure, and magnetic properties of [[Gd2(TCNQ)5(H2O)9][Gd(TCNQ)4-(H2O)3]].4 H2O.
A rare-earth metal TCNQ magnet: synthesis, structure, and magnetic properties of [[Gd2(TCNQ)5(H2O)9][Gd(TCNQ)4-(H2O)3]].4 H2O.
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DOI:
10.1002/anie.200390259
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发表时间:
2003-03
影响因子:
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通讯作者:
Hanhua Zhao;M. Bazile;J. Galán‐Mascarós;K. Dunbar
中科院分区:
文献类型:
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作者:
Hanhua Zhao;M. Bazile;J. Galán‐Mascarós;K. Dunbar
One of the most rapidly expanding areas of coordination chemistry research is the design of magnetic materials based on molecular building blocks.[1] A perusal of the literature reveals that a successful design strategy for preparing molecular magnets is the coordination of organic radicals such as nitronyl nitroxides [2] and organocyanides such as TCNEÀ C (tetracyanoethylene)[3] and TCNQÀ C (7, 7, 8, 8-tetracyanoquinodimethane)[4] to paramagnetic transition metal ions. The presence of both metal spins (typically S> 1/2) and organic spin carriers (S= 1/2) leads to strong local super-[*] Prof. KR Dunbar, H. Zhao, MJ Bazile, Jr. Department of Chemistry Texas A&M University College Station, TX 77842–3012 (USA) Fax:(+ 1) 979-845-7177 E-mail: dunbar@ mail. chem. tamu. edu Dr. JR Galµn-Mascarós Instituto de Ciencia Molecular Universidad de Valencia Dr. Moliner, 50, 46100 Burjasot (Spain)[**] KRD gratefully acknowledges the National Science Foundation for a Nanoscale Science and Engineering NIRT Grant (DMR-0103455) and a PI Grant (CHE-9906583) and for equipment grants to purchase the CCD X-ray equipment (CHE-9807975) and the SQUID magnetometer (NSF-9974899). HZ acknowledges the Science and Technology Committee of Jiangsu Province of China for the donation of f-block starting materials. MJB thanks the Welch Foundation (A1449) and NSF (CHE-9906583) for support and Professor TR Hughbanks for his helpful advice and discussion. TCNQ= 7, 7, 8, 8-tetracyanoquinodimethane.