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
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通讯作者:
Hanhua Zhao;M. Bazile;J. Galán‐Mascarós;K. Dunbar
Hanhua Zhao;M. Bazile;J. Galán‐Mascarós;K. Dunbar
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文献类型:
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作者:
Hanhua Zhao;M. Bazile;J. Galán‐Mascarós;K. Dunbar

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配位化学研究中发展最快的领域之一是基于分子构建块的磁性材料的设计。[1]对文献的细读表明,制备分子磁体的成功设计策略是有机基团如硝酰基氮氧化物[2]和有机氰化物如TCNE 2C(四氰基乙烯)[3]和TCNQ 2C(7,7,8,8-四氰基醌二甲烷)[4]与顺磁性过渡金属离子的配位。金属自旋(通常S> 1/2)和有机自旋载流子(S= 1/2)的存在导致了强的局部超[*] KR Dunbar,H。赵,MJ Bazile,Jr.德克萨斯A&M大学化学系学院站,TX 77842-3012(USA)传真:(+ 1)979-845-7177电子邮件:dunbar@ mail.塔穆化学公司edu Dr. JR Galµn-Mascarós Instituto de Ciudad Molecular Universidad de瓦伦西亚博士Moliner,50岁,46100 Burjasot(西班牙)[**] KRD感谢国家科学基金会的纳米科学和工程NIRT赠款(DMR-0103455)和PI赠款(CHE-9906583)以及购买CCD X射线设备(CHE-9807975)和SQUID磁强计(NSF-9974899)的设备赠款。HZ感谢中国江苏省科学技术委员会捐赠f-block起始物料。MJB感谢韦尔奇基金会(A1449)和NSF(CHE-9906583)的支持和TR Hughbanks教授的有益建议和讨论。TCNQ= 7,7,8,8-四氰基醌二甲烷。
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.