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- W2004130937 abstract "The i.r. and far i.r. spectra of the monomeric PcML/PcML2, dimeric PcM—L—MPc and polymeric [PcML]n base adducts of phthalocyaninatoiron (PcFe) and -cobalt (PcCo) with the ligands (L = 4,4′-bipyridine and pyrazine) are reported. In the case of 4,4′-bipyridine, monodentate terminal or bidentate bridging base molecules were distinguished by the sensitivity of in plane vibrations at 1215 and 1589 cm−1 to the coordination state of the ligand. These absorptions were assigned with the help of the corresponding pyridine and pyridine-d5 complexes. Infrared data of PcCopy, PcCo(py)2, PcFe(py)2 and their deuterated derivatives are given. In case of pyrazine the centrosymmetric stretch at 1581 cm−1 is characteristic for the terminal base molecule, whereas this absorption vanishes in polymeric complexes containing bidentate, bridging ligands. This observation applies as well to a series of data taken from the literature. The intensity of the bands at 1589 cm−1 for polymeric 4,4′-bipyridine complexes and at 1581 cm−1 for pyrazine derivatives enables a chain length determination by comparison with the spectra of the corresponding monomeric compounds. Infrared absorptions in the range of 1065–1130 cm−1 are assigned to transition-activated absorptions of the phthalocyaninato moiety, which are caused by complex formation. The symmetry dependence of the angular deformation mode δ(NPc—M—NPc) in the far i.r. region is deduced for penta- and hexa-coordinated PcCo-adducts." @default.
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- W2004130937 date "1982-01-01" @default.
- W2004130937 modified "2023-09-26" @default.
- W2004130937 title "Infrared and far infrared studies of monomeric and polymeric base adducts of phthalocyaninato transition metal(II) complexes" @default.
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- W2004130937 doi "https://doi.org/10.1016/0584-8539(82)80124-4" @default.
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