Chemical Research in Chinese Universities ›› 2010, Vol. 26 ›› Issue (5): 687-692.

• Articles • Previous Articles     Next Articles

Synthesis, Structure and Properties of Tren-Schiff Base Compound and Its Manganese(III) Complex by Original Self-assembly Reaction

ZHAO Hai-yan1, LI Jing1, XING Yong-heng1*, PU Zhi-feng2, BAI Feng-ying1, GE Mao-fa2 and NIU Shu-yun1   

  1. 1. College of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, P. R. China;
    2. Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, P. R. China
  • Received:2009-10-15 Revised:2009-11-06 Online:2010-09-25 Published:2010-11-26
  • Supported by:

    Supported by the National Natural Science Foundation of China(No.20771051) and the Education Foundation of Liaoning Province, China(No.2007T093).

Abstract: The new self-assembly tripodal hexadentate Schiff base compound, C27H30N4O3, derived from tris(2-aminoethyl)amine(tren) with salicylaldehyde and its manganese(III) complex [(C27H27N4O3)Mn]·CH3OH(1) were designed and synthesized by original self-assembly reaction at room temperature in the solution of methanol. Both the compounds were characterized by elemental analysis, IR spectrometry, UV-Vis spectroscopy and X-ray single crystal diffraction. It is noteworthy that the tripodal hexadentate Schiff base ligand effectively encapsulates the manganese(III) ion and enforces a six-coordinate geometry in complex 1 with the apical nitrogen atom of tren-Schiff base remaining unbound to the metal. It is found that there are several intra-molecular hydrogen bonds in them(C—H···O and O—H···N). In addition, quantum chemistry calculations were also performed and discussed in detail. These results are consistent with the structural analyses of them.

Key words: Tren-Schiff base, Crystal structure, Hydrogen bond, Quantum chemistry