Synthesis and hypodentate Cu(II) complexes of new tripodal tetraamine ligands incorporating a long pendant arm
2003; Elsevier BV; Volume: 23; Issue: 1 Linguagem: Inglês
10.1016/j.poly.2003.09.030
ISSN1873-3719
AutoresNatasha J. Lundin, Ian Geoffrey Hamilton, Allan G. Blackman,
Tópico(s)Crystal structures of chemical compounds
ResumoThe synthesis and characterisation of the new aliphatic tripodal amine ligands apba (N-(5-aminopentyl)-N,N-bis(2-aminoethyl)amine) and ahba (N-(6-aminohexyl)-N,N-bis(2-aminoethyl)amine) are reported. The tetrahydrochloride salts of these ligands, as well as that of the previously reported ligand abba (N-(4-aminobutyl)-N,N-bis(2-aminoethyl)amine), react with CuCO3 · Cu(OH)2 to give complexes in which the tripodal ligand coordinates to the Cu(II) ion in a hypodentate fashion, with the longest arm of the tripodal ligand remaining protonated and unbound in all cases. The crystal structure of [Cu(abbaH)Cl2]Cl · 2H2O · CH3OH reveals a five-coordinate Cu(II) ion in a slightly distorted square pyramidal geometry.
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