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Structure and characterization of copper(II) perchlorate with diethyl(pyridin-2-ylmethyl) phosphonate (2-pmpe)ligand: [Cu(2-pmpe)2(CIO4)2].
Autorzy
Rok wydania
2009
Czasopismo
Numer woluminu
27
Strony
987-998
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
Copper(II) mononuclear compound [Cu(2-pmpe)2(ClO4)2] (2-pmpe = diethyl(pyridin-2-ylmethyl) phosphonate was synthesized and studied. Examination of the crystal structure by the X-ray diffraction method revealed two crystallographically unrelated molecules, [Cu(1)(2-pmpe)2(ClO4)2] (1) and [Cu(2)(2-pmpe)2(ClO4)2] (2) in an asymmetric part of the unit cell. The geometry about the Cu(1) and Cu(2) chromophores shows elongated octahedra, resulting from the didentate N,O-bonded two chelate 2-pmpe ligands and two coordinated perchlorate ions around the Cu(II) cations (CuN2O4 chromophore). Similarly to 1, molecules 2 are linked to each other by weak C–H⋅⋅⋅O hydrogen bonds and π⋅⋅⋅π stacking interactions. Additionally, both 1 and 2 molecules are linked to each other through weak C–H⋅⋅⋅O hydro-gen bonds and C–H⋅⋅⋅π contacts, resulting in a 3Dpolymeric network arrangement. Magnetic data indi-cate a very weak intermolecular exchange interaction between copper(II) ions (zJ′ = –0.20 cm–1) transmit-ted through non-covalent interactions in the crystal lattice. The spectral properties are in accordance with the structural and magnetic data.
Słowa kluczowe
copper(II), phosphonic acid ester, crystal structure, spectroscopy, magnetism
Adres publiczny
https://materialsscience.pwr.edu.pl/bi/vol27no4/articles/ms_06_2008_267zuro.
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