Abstract
The lead(II) complexes of 2,2'-iminodiethanol (H2Dea)Pb2(Dea)(NO3)2(DMF), Pb2(HDea)2Cl2 and [Pb2Br6](H3Dea)2(DMF=N,N-dimethylformamide) have been synthesized from the components and characterized by X-ray crystallography. Both mono- (HDea) and doubly (Dea) deprotonated HN(CH2CH2OH)2 are coordinated via oxygen and nitrogen atoms in Pb2(Dea)(NO3)2(DMF) and Pb2(TIDea)2Cl2. The nitrate complex contains three- and two- coordinate lead(II) atoms linked by μ2-bridging oxygen atoms, whilst in the chloride complex four- and two-coordinate metal atoms are also associated by μ2-bridging oxygen atoms. In [Pb2Br6](FI3Dea)2 the nearest coordination environment of metal atoms consists of bromine atoms only, while the H3Dea+ cations are not coordinated to lead atoms at all. The structural differences between the coordination environments of the lead atoms are discussed in connection with the inert pair effect. All compounds possess ionic type crystal structures.
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