A Diamondoid Network of Tetrakis(acetamidato)dirhodium in Mixed Oxidation States Linked by 4-Iodide Having a 105
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- 作者：Yasuhiro Fuma ; Masahiro Ebihara ; Shoichi Kutsumizu ; and Takashi Kawamura
- 刊名：Journal of the American Chemical Society
- 出版年：2004
- 出版时间：October 6, 2004
- 年：2004
- 卷：126
- 期：39
- 页码：12238 - 12239
- 全文大小：50K
- 年卷期：v.126,no.39(October 6, 2004)
- ISSN：1520-5126
文摘
A mixed oxidation-state (Rh24+ and Rh25+) compound, [{Rh2(acam)4}2I]n·6nH2O (Hacam = acetamide), has been synthesized. The compound has a nonpenetrating diamondoid arrangement of {Rh2(acam)4} units linked by 
4-iodides. All of the dirhodium units are crystallographically equivalent, as are all of the iodide atoms. The magnetic susceptibility of this compound shows that one-half of the Rh2 units are in the Rh25+ oxidation state with one odd electron and the other half in the closed-shell Rh24+ state. Its electrical conductivity is 1.4 × 10-3 S cm-1 (pellets, room temperature) and oscillates over the range of 105 orders of magnitude during dehydration-rehydration cycles of interstitial water molecules.
4-iodides. All of the dirhodium units are crystallographically equivalent, as are all of the iodide atoms. The magnetic susceptibility of this compound shows that one-half of the Rh2 units are in the Rh25+ oxidation state with one odd electron and the other half in the closed-shell Rh24+ state. Its electrical conductivity is 1.4 × 10-3 S cm-1 (pellets, room temperature) and oscillates over the range of 105 orders of magnitude during dehydration-rehydration cycles of interstitial water molecules.