Synthesis and structure of d-metal complexes with derivatives of 9-oxypyrido[1,2a]pyrimidine-2-one. Crystal structure of 4-methyl-9-oxypyrido[1,2a]pyrimidine-2-one

By reacting Cu(I), Cu(II), Ni(II), Co(II), and Mn(II) chlorides and Ag(I) nitrate with 4-methyl-(8-nitro)-9-oxypyrido[1,2-a]pyrimidine-2-ones (HL1, HL2), the complex compounds ML and MHLCl2 · nH2O (n = 1-3) were produced (8 compounds in all). The spectral characteristics of the neutral, anionic, and cationic forms of ligands were determined and the crystal structure of 4-methyl-9-oxypyrido[1,2-a]pyrimidine-2-one was resolved. It was found that the monovalent metal complexes contain ligands in the anionic form, while the ligands in the bivalent metal complexes are in bipolar form. Coordination is realized with the involvement of the hydroxyl oxygen atoms and the cyclic nitrogen atom.

Authors
Editors
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Publisher
-
Number of issue
8
Language
English
Pages
587-593
Status
Published
Department
-
DOI
-
Number
-
Volume
26
Year
2000
Organizations
  • 1 Russian Univ. of Peoples' Friendship, ul. Miklukho-Maklaya 6, Moscow 117198, Russian Federation
Keywords
4 methyl (8 nitro) 9 oxypyrido[1,2 a]pyrimidine 2 one; 4 methyl 9 oxypyrido[1,2 a]pyrimidine 2 one; 9 oxypyrido[1,2 a]pyrimidine 2 one; anion; cation; cobalt chloride; coordination compound; copper chloride; hydroxyl group; manganese chloride; metal complex; nickel chloride; nitrogen; oxygen; pyrido[1,2 a]pyrimidine derivative; silver nitrate; unclassified drug; article; chemical reaction; complex formation; crystal structure; ionization; polarization; spectroscopy; synthesis
Date of creation
19.10.2018
Date of change
19.10.2018
Short link
https://repository.rudn.ru/en/records/article/record/455/