Citation:
Su Yingcao, Cheng Chuanxuan. The Coordination Number of Coordination Polymer Cu (Ⅱ)-PAAm and Cu (Ⅱ)-PVA[J]. Chinese Journal of Applied Chemistry,
;1994, 44(5): 31-35.
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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.
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