Affiliation:
1. Fachbereich Chemie der Universität Kaiserslautern, Erwin-Schrödinger-Straße, D-6750 Kaiserslautern
Abstract
Abstract
The complexes [(CH3Hg)AGuaH ] (1) and [(CH3Hg)2AGua] • H2O (2) have been isolated from aqueous 1:1 and 2:1 solutions of CH3HgOH and 8 -azaguanine (AGuaH2) at respective pH values of 5 and 9. Only one CH3Hg+ complex of 8 -azahypoxanthine (AHxH2), namely [(CH3Hg)2AHx] (3), could be isolated under analogous conditions. X-ray structural analyses established N1 and N9 as metal binding sites in 3 and N9 as the coordination position in [Zn(H2O)4(AHxH)2] (4). With 8-aza-9-benzylhypoxanthine (9-BzAHxH) only one CH3Hg+ complex [(CH3Hg)9-BzAHx] (5) could be isolated in the pH range 2-10. N1 was established by X-ray structural analysis as the binding site. The relevance o f these findings to an understanding of ligand behaviour of the antineoplastic agent 8 -azaguanine is discussed.
Cited by
21 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献
1. Mercurophilic Interactions;Organometallics;2015-01-30
2. Ternary Ni(II) and Cu(II) complexes with 4,6-dimethyl-1,2,3-triazolo-[4,5-d]pyrimidin-5,7-dionato and chelating aliphatic amines as auxiliary ligands: Variability in the binding site and hydrogen-bond networks;Polyhedron;2010-01
3. First and second coordination spheres in divalent metal compounds containing pyridine and 4,6-dimethyl-1,2,3-triazolo[4,5-d]pyrimidin-5,7-dione;Polyhedron;2009-04
4. A study of the second coordination sphere in 8-azaxanthinato salts of divalent metal aquacomplexes;Inorganica Chimica Acta;2009-04
5. Versatile binding behaviour of 4,6-dimethyl-1,2,3-triazolo[4,5-d]-pyrimidin-5,7-dionato in the presence of bipyrimidine. Supramolecular H-bond architectures;Dalton Transactions;2009