| 裸露金属簇状化合物K4PbxSn9-x的119Sn、207Pb多核核磁共振研究 |
| A STUDY OF PbxSn9-x4- BY MULTINUCLEAR NMR |
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| 摘要: 本文对乙二胺溶液中裸露金属原子簇用119Sn及207Pb核磁共振作了研究。对每个峰做了标识。根据谱线强度进行分析,得知溶液中锡与铅的比例大于固体中的比例。从自由能的角度看,Pb2Sn74-是最不稳定的一种原子簇,本文还对谱线中各条线都进行了理论拟合,结果与实验相吻合。 |
| 关键词: 簇状化合物 Zintl离子 多核NMR |
| 基金项目: 中国国家自然科学基金;加拿大自然科学与工程基金;部分测试工作得到北京中关村联合测试中心资助 |
| Abstract: In the present work the naked-metal clusters, PbxSn9-x4-, have been fully characterized in ethylenediamine solution by 119Sn and 207Pb NMR spectroscopy. The peaks arc assigned. According to the experiments, it is found that the ratio of tin to lead is greater in the liquid thanthe solid:(QSn/QPb)liquid > (QSn/QPb)soild where Qi denotes the total amount of element i. By com-paring the free energies of the clusters, Pb2Sn74- is the most unstable one. This study also deals with the intensities of the spectra and the theoretical results are in good agreement with those of NMR measurements. |
| Keywords: cluster Zintl anion multinuclear NMR |
| 投稿时间：1990-11-07 |
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| 陆路德,汪信,杨绪杰,周淑华,宋启泽,桑来恩.裸露金属簇状化合物K4PbxSn9-x的119Sn、207Pb多核核磁共振研究[J].无机化学学报,1992,8(3):259-265. |
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