Crystal Structure of Lead(II) Complexes with 2,2'-Iminodiethanol
نویسندگان
چکیده
The lead(II) complexes of 2,2'-iminodiethanol (H2Dea)Pb2(Dea)(N03)2(DMF), Pb2(HDea)2Cl2 and [Pb2Br6](H3Dea)2(DM F = N,N-dimethylformamide) have been synthesized from the com ponents 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(D ea)(N 03)2(DM F) and Pb2(HDea)2Cl2. The nitrate complex contains threeand twocoordinate lead(II) atoms linked by /^-bridging oxygen atoms, whilst in the chloride complex fourand two-coordinate metal atoms are also associated by //2-bridging oxygen atoms. In [Pb2Br6](H3Dea)2 the nearest coordination environment of metal atoms consists of bromine atoms only, while the H 3Dea+ cations are not coordinated to lead atoms at all. The structural differences between the coordination environments of the lead atoms are discussed in connec tion with the inert pair effect. All compounds possess ionic type crystal structures.
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