About: Chirality Transfer in Magnetic Coordination Complexes Monitored by Vibrational and Electronic Circular Dichroism

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Magnetic coordination complexes based on Schiff bases are promising new molecular materials for electronics. Two -oxo Fe-III dimeric complexes of enantiomers of Schiff base ligands (N,N-(1R,2R)-1,2-diphenylethylenebis(salicylideneimine) (H(2)salphen-R, 1a) and N,N-(1S,2S)-1,2-diphenylethylenebis(salicylideneimine) (H(2)salphen-S, 1b)) were synthesized; further reaction with 4-salicylideneamino-1,2,4-triazole (Hsaltrz) led to enantiomers of two one-dimensional (1D) Fe-III coordination complexes. The structures of these complexes were determined by X-ray diffraction. Magnetic susceptibility measurements revealed that -oxo dimeric complexes displayed strong antiferromagnetic coupling, whereas the 1D complexes exhibited paramagnetic behavior. The chirality of the Schiff bases transferred to macromolecular chirality of the complexes, which could be monitored by both vibrational and electronic circular dichroism (CD) spectroscopic methods. The macroscopic handedness was manifested in CD signals attributed to exciton coupling between the ligands. Thus, the chiral spectroscopies were useful to probe the chirality of the complexes, their structure, and the polymerization degree. Magnetic coordination complexes based on Schiff bases are promising new molecular materials for electronics. Two -oxo Fe-III dimeric complexes of enantiomers of Schiff base ligands (N,N-(1R,2R)-1,2-diphenylethylenebis(salicylideneimine) (H(2)salphen-R, 1a) and N,N-(1S,2S)-1,2-diphenylethylenebis(salicylideneimine) (H(2)salphen-S, 1b)) were synthesized; further reaction with 4-salicylideneamino-1,2,4-triazole (Hsaltrz) led to enantiomers of two one-dimensional (1D) Fe-III coordination complexes. The structures of these complexes were determined by X-ray diffraction. Magnetic susceptibility measurements revealed that -oxo dimeric complexes displayed strong antiferromagnetic coupling, whereas the 1D complexes exhibited paramagnetic behavior. The chirality of the Schiff bases transferred to macromolecular chirality of the complexes, which could be monitored by both vibrational and electronic circular dichroism (CD) spectroscopic methods. The macroscopic handedness was manifested in CD signals attributed to exciton coupling between the ligands. Thus, the chiral spectroscopies were useful to probe the chirality of the complexes, their structure, and the polymerization degree. (en)
Title	Chirality Transfer in Magnetic Coordination Complexes Monitored by Vibrational and Electronic Circular Dichroism Chirality Transfer in Magnetic Coordination Complexes Monitored by Vibrational and Electronic Circular Dichroism (en)
skos:prefLabel	Chirality Transfer in Magnetic Coordination Complexes Monitored by Vibrational and Electronic Circular Dichroism Chirality Transfer in Magnetic Coordination Complexes Monitored by Vibrational and Electronic Circular Dichroism (en)
skos:notation	RIV/61388963:_____/14:00429578!RIV15-AV0-61388963
http://linked.open...avai/riv/aktivita	I
http://linked.open...avai/riv/aktivity	I
http://linked.open...iv/cisloPeriodika	5
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Bouř, Petr
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav organické chemie a biochemie AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	7154
http://linked.open...ai/riv/idVysledku	RIV/61388963:_____/14:00429578
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	chirality; circular dichroism; iron; magnetic properties; Schiff bases (en)
http://linked.open.../riv/klicoveSlovo	magnetic properties iron Schiff bases chirality circular dichroism
http://linked.open...odStatuVydavatele	DE - Spolková republika Německo
http://linked.open...ontrolniKodProRIV	[7CF7114BE310]
http://linked.open...i/riv/nazevZdroje	ChemPlusChem
http://linked.open...in/vavai/riv/obor	CF
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	79
http://linked.open...iv/tvurceVysledku	Bouř, Petr Li, Y. Z. Wu, T. You, X. Z. Zhang, X. P.
http://linked.open...ain/vavai/riv/wos	000335515800009
issn	2192-6506
number of pages	10 (xsd:int)
http://bibframe.org/vocab/doi	10.1002/cplu.201300429

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