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metal-organic compounds
The crystal structure of the title compound, [SmCl2{C2H4N2(CH2C5H4N)4}]ClO4, at room temperature was solved and compared with the previously determined structure of [EuIIICl2(R-tppn)]ClO4 [where R-tppn is N,N,N',N'-tetrakis(2-pyridylmethyl)-(R)-propylenediamine]. The Sm3+ ion is eight-coordinated through the six N atoms of the N,N,N',N'-tetrakis(2-pyridylmethyl)ethylenediamine ligand and two Cl- ions. The coordination is best described as dodecahedral with some important distortions.