2 - mercaptopyridine with copper (Ⅱ), Ni (&#85

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2 - mercaptopyridine with copper (Ⅱ), Ni (Ⅱ) complexes

Disconnected. TG curve followed by stable , indicating that the complex decomposition of termination, by the 800. O'C 34.1 when we know the content of the final product is CuS (32. Cool

. Therefore,[link widoczny dla zalogowanych], analysis of copper in the complex is 22.4 '/ /, and the titration results ( 22,8 ) basically the same. The same reason the TG curve in Figure 2 : From 766.7 ℃ when the content of the final product is known as 26.5 NiO (26.8 'A). Content of nickel in the complex 21. oV,, and the titration results (19.6 'A) are basically the same . 2.4 IR [1h to 2 -mercaptopyridine and a copper, nickel complex by IR spectroscopy , to analyze the characteristics of the peak , to the list 3. In the ligands , (S-H) stretching vibration appears in the wrapped 3 ligand and copper (I), set (I) complexes of m data Notes of a M. = Cu (I), Ni (I) 2497am-1 Office, when it forms complexes after the peak disappears , indicating that the thiol hydrogen atoms on off ; both complexes (C-S) absorption peak shifts to higher wave number with purple Shift 17 ~ 21am_. Therefore, S atoms directly with the metal ions to form coordination bond . Complex C-N stretching vibration (1446,1450 am-1) and ligand (1492am) had obvious red shift compared , indicating that the metal and N atoms . Complexes in 300 3 Conclusion Because Cu. + And Ni. + empty 3d orbital , 2 -mercaptopyridine in a N and S atoms have lone pair electrons , can form coordination bonds are stable complexes . Comprehensive elemental analysis , thermal analysis and titration analysis of the quality , the composition of the complex proved to M (CsHtNS) z; and according to IR, further confirm the complex contains CH. NS structure , S, N atoms has been the formation of coordination bonds with the metal , ligand and the Cu and Ni in the complex ratio are 2t1.