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Updated: Jun 1, 2026

Preparation, Purification, and Characterization of Lanthanide Complexes for Use as Contrast Agents for Magnetic Resonance Imaging
Published on: July 21, 2011
catena-Poly[[(liriodenine-κN,O)lead(II)]-di-μ-chlorido]
Yan-Tao Qin1, Lu Tao, Tian-Jing He
1Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), School of Chemistry & Chemical Engineering, Guangxi Normal University, Guilin 541004, People's Republic of China.
Abstract:
The title compound, [PbCl(2)(C(17)H(9)NO(3))](n), was synthesized by the hydro-thermal reaction of PbCl(2) and liriodenine. The lead(II) atom has a distorted octa-hedral environment made up of the O and N atoms of the liriodenine ligand [Pb-O 2.666 (4) Å, Pb-N 2.587 (5) Å, O-Pb-N 61.78 (14)°] and four bridging chloro ligands, which link the complex mol-ecules into infinite chains along the a axis. Both crystallographically independent chloro-bridges are asymmetric, so that the Pb atom participates in two short [2.6872 (18) and 2.7952 (18) Å] and two noticeably longer Pb-Cl bonds [2.9626 (18) and 3.031 (2) Å].
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