中华医学超声杂志

应用化学 ›› 1994, Vol. 0 ›› Issue (5): 31-35.

• 研究论文 • 上一篇    下一篇

铜(Ⅱ)－聚丙烯酰胺和铜(Ⅱ)－聚乙烯醇配位聚合物的配位数

苏英草1, 程传煊2   

  1. 1. 福建师范大学高分子研究所 福州 350007;
    2. 福建师范大学化学系 福州
  • 收稿日期:1994-01-10 修回日期:1994-06-14 出版日期:1994-10-10 发布日期:1994-10-10

The Coordination Number of Coordination Polymer Cu(Ⅱ)-PAAm and Cu(Ⅱ)-PVA

Su Yingcao1, Cheng Chuanxuan2   

  1. 1. Institute of Polymer Science, Fujian Normal University, Fuzhou 350007;
    2. Department of Chemistry, Fujian Normal University, Fuzhou
  • Received:1994-01-10 Revised:1994-06-14 Published:1994-10-10 Online:1994-10-10

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摘要： 配位聚合物PAAm-CuCl2和CuCl2·2H2O的Cu2+2p XPS谱上都有Shake-up峰,其与各自的Cu2+2p3/2肩峰或主峰距离ΔEs2或ΔEs分别为8.7和8.6eV;但配位聚合物Cu(Ⅱ)-PVA却无此峰。由此推定,前者的Cu2+是以sp3杂化轨道接受PAAm4个链节单元C-N上N的孤对电子部分转移形成配位键;而Cu(Ⅱ)-PVA配位聚合物中的Cu2+却以dsp2杂化轨道接受PVA4个链节单元侧基O的孤对电子部分转移,产生配位键,即Cu2+与PAAm或PVA的链节单元配位比均是1:4,此结果与电导率法测定PAAm-CuCl2的配位比相同。

关键词: 铜(Ⅱ)－高分子配合物, 聚丙烯酰胺, 聚乙烯醇, 配位数, XPS

Abstract: The shake-up peaks are observed on XPS spectra of the coordination complex PAAm-CuCl2 and CuCl2·2H2O and they have a distance to Cu2+2p3/2 shoulder or main peak (ΔEs2=8.7eV or ΔEs=8.6eV)respectively.No shake-up peak in XPS spectrum was found for Cu(Ⅱ)-PVA complex.It is concluded that the coordination bond in PAAm-CuCl2 is formed in result of the acceptance of sp3 hybrid orbitals with the nonpair electrons partially transfered from N of four C-N units of PAAm,whereas in Cu(Ⅱ)-PVA it is formed in result of the acceptance of dsp2 hybrid orbitals with partial transfered nonpair electrons on the side O in four chain units of PVA.The ratio of coordination betvveen Cu2+ and PAAm or PVA is thus one to four,as was determined for Cu2+ and PAAm by electric conductivity measurement.

Key words: Cu(Ⅱ)-polymer complex, polyacrylamide, polyvinyl alcohol, coodination num-ber, XPS

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