Abstract: A case of a three-month female infant who was born in an ectopic and institutional deli... more Abstract: A case of a three-month female infant who was born in an ectopic and institutional delivery is described. His parents are healthy and came to the consultation office due to an enlargement in the posterior part of the head. Precocious Hyperostosis due to synostoses ...
New cyanamidonitrate–copper(II) complexes [Cu(NO2NCN)2Ln] (L=imidazole (iz), n=2; L=iz, 1-, 2- or... more New cyanamidonitrate–copper(II) complexes [Cu(NO2NCN)2Ln] (L=imidazole (iz), n=2; L=iz, 1-, 2- or 4-methylimidazole (meiz), n=4) have been isolated and characterised by IR, electronic and ESR spectroscopy. The crystal structures of 1- and 4-meiz complexes have been determined by X-ray crystallography; the structure of [Cu(NO2NCN)2(iz)2] is known (J. Kožı́šek, J.G. Dı́az, M. Hvastijová, L. Jäger, Acta Crystallogr., Sect. C 53 (1997) 703). The crystal structure of the first two compounds consists of [Cu(NO2NCN)2L4] units, in which the central CuII atoms are pseudo-octahedrally coordinated by six nitrogen atoms. Four of them, in equatorial planes, originate from meiz molecules and two, in axial positions, are nitrile nitrogens from the NO2NCN− anions. Influence of hydrogen bonds on equatorial–axial bond length correlation was ascertained. In the ESR spectra of the [Cu(NO2NCN)2L4] compounds copper hyperfine splitting is resolved. For all complexes, weak lines corresponding to the ΔMs=2 transitions appear. The spectrum of [Cu(NO2NCN)2(iz)4] in frozen methanolic solution shows 16-fold nitrogen splitting of the perpendicular band.
Abstract: A case of a three-month female infant who was born in an ectopic and institutional deli... more Abstract: A case of a three-month female infant who was born in an ectopic and institutional delivery is described. His parents are healthy and came to the consultation office due to an enlargement in the posterior part of the head. Precocious Hyperostosis due to synostoses ...
New cyanamidonitrate–copper(II) complexes [Cu(NO2NCN)2Ln] (L=imidazole (iz), n=2; L=iz, 1-, 2- or... more New cyanamidonitrate–copper(II) complexes [Cu(NO2NCN)2Ln] (L=imidazole (iz), n=2; L=iz, 1-, 2- or 4-methylimidazole (meiz), n=4) have been isolated and characterised by IR, electronic and ESR spectroscopy. The crystal structures of 1- and 4-meiz complexes have been determined by X-ray crystallography; the structure of [Cu(NO2NCN)2(iz)2] is known (J. Kožı́šek, J.G. Dı́az, M. Hvastijová, L. Jäger, Acta Crystallogr., Sect. C 53 (1997) 703). The crystal structure of the first two compounds consists of [Cu(NO2NCN)2L4] units, in which the central CuII atoms are pseudo-octahedrally coordinated by six nitrogen atoms. Four of them, in equatorial planes, originate from meiz molecules and two, in axial positions, are nitrile nitrogens from the NO2NCN− anions. Influence of hydrogen bonds on equatorial–axial bond length correlation was ascertained. In the ESR spectra of the [Cu(NO2NCN)2L4] compounds copper hyperfine splitting is resolved. For all complexes, weak lines corresponding to the ΔMs=2 transitions appear. The spectrum of [Cu(NO2NCN)2(iz)4] in frozen methanolic solution shows 16-fold nitrogen splitting of the perpendicular band.
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