中华医学超声杂志

应用化学 ›› 1986, Vol. 0 ›› Issue (6): 9-14.

• 研究论文 • 上一篇    下一篇

气相色谱法研究配合物的热稳定性—ⅩⅣ.K2Co[Fe(CN)6]•H2O和Co3[Fe(CN)6]2•7H2O的热分解及其加氢反应

牛均宁1, 汪信1, 陈汉文1, 忻新泉1, 戴安邦1, 张毓昌2   

  1. 1. 南京大学配位化学研究所;
    2. 南京大学物理系
  • 收稿日期:1985-11-06 修回日期:1986-03-07 出版日期:1986-12-10 发布日期:1986-12-10
  • 通讯作者: 忻新泉

STUDIES ON THERMAL STABILITIES OF COORDINATION COMPOUNDS BY GAS CHROMATOGRAPHY Ⅹ Ⅳ.THERMAL DECOMPOSITION AND HYDROGENATION REACTIONS OF K2Co[Fe(CN)6]•H2O AND Co3[Fe(CN)6]2•7H2O

Niu Junning1, Wang Xin1, Chen Hanwen1, Xin Xinquan1, Dai Anbang1, Zhang Yuchang2   

  1. 1. Coordination Chemistry Institute, Nanjing University;
    2. Physics Department, Nanjing University
  • Received:1985-11-06 Revised:1986-03-07 Published:1986-12-10 Online:1986-12-10

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摘要： K2Co[Fe(CN)6〕•H2O和Co3〔Fe(CN)6]2•7H2O的热分解经过脱水、放出(CN)2和HCN或C≡N-键断裂,最终固相产物中有铁钴合金生成。CN-的多重键在加氢时断裂,生成NH3和CH4。以CN-作为加氢反应的探针,考察了C≡N-键在金属双端基间的配位活化作用。

Abstract: The thermal decomposition processes and hydrogenation reactions of K2Co[Fe(CN)6]•H2O and Co3[Fe(CN)6]•7H2O in hydrogen were studied by GC to discern the gas products and by Mossbauer spectroscopy, IR and XRD to determine the struc-ture of the solid products. Their decomposition processes may be divided into three steps:(1) dehydration, (2) reduction of Fe (Ⅲ) to Fe(Ⅱ), and (3) rupture of the triple bond of C≡N- by hydrogenation to evolev NH3 and CH4. Iron-Cobalt alloy was formed at the final step of decomposition. K2Co[Fe(CN)6)•H2O and Co3[Fe(CN)6]•7H2O may be considered as a multibond activation model of bimetal coordination, since CN- acts as a typical ambident ligand in it. The activation of CN- triple bond has been discussed in terms of hydrogenation reaction.

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