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Nonstoichiometric Bromo-chloro-pyridine-MoIII Complexes

Nives Kitanovski
Ljubo Golič
Anton Meden
Boris Čeh

Puni tekst: engleski, pdf (351 KB) str. 111-120 preuzimanja: 560* citiraj
APA 6th Edition
Kitanovski, N., Golič, Lj., Meden, A. i Čeh, B. (2005). Nonstoichiometric Bromo-chloro-pyridine-MoIII Complexes. Croatica Chemica Acta, 78 (1), 111-120. Preuzeto s https://hrcak.srce.hr/2799
MLA 8th Edition
Kitanovski, Nives, et al. "Nonstoichiometric Bromo-chloro-pyridine-MoIII Complexes." Croatica Chemica Acta, vol. 78, br. 1, 2005, str. 111-120. https://hrcak.srce.hr/2799. Citirano 08.03.2021.
Chicago 17th Edition
Kitanovski, Nives, Ljubo Golič, Anton Meden i Boris Čeh. "Nonstoichiometric Bromo-chloro-pyridine-MoIII Complexes." Croatica Chemica Acta 78, br. 1 (2005): 111-120. https://hrcak.srce.hr/2799
Harvard
Kitanovski, N., et al. (2005). 'Nonstoichiometric Bromo-chloro-pyridine-MoIII Complexes', Croatica Chemica Acta, 78(1), str. 111-120. Preuzeto s: https://hrcak.srce.hr/2799 (Datum pristupa: 08.03.2021.)
Vancouver
Kitanovski N, Golič Lj, Meden A, Čeh B. Nonstoichiometric Bromo-chloro-pyridine-MoIII Complexes. Croatica Chemica Acta [Internet]. 2005 [pristupljeno 08.03.2021.];78(1):111-120. Dostupno na: https://hrcak.srce.hr/2799
IEEE
N. Kitanovski, Lj. Golič, A. Meden i B. Čeh, "Nonstoichiometric Bromo-chloro-pyridine-MoIII Complexes", Croatica Chemica Acta, vol.78, br. 1, str. 111-120, 2005. [Online]. Dostupno na: https://hrcak.srce.hr/2799. [Citirano: 08.03.2021.]

Sažetak
By a selective exchange of ligand Br by Cl, a series of nonstoichiometric bromo-chloro-pyridine- molybdenum(III) octahedral compounds of the type (cat)[MoBraCl(4-a)py2] (cat = pyH, a = 3–1 (1, 4, 7)); cat = [(C2H5)3NH], a = 2.744 (2); cat = Rb, a = 2.278 (5); cat =[(C6H5)4)As], a = 1.258 (8) and [MoBraCl(3–a)py3] (a = 2–1 (3, 6)) have been prepared and characterized. Owing to great similarity of the powder diffraction patterns and IR spectra of compounds mer- [MoBraCl(3-a)py3] (a = 3–0) with the known monoclinic modification in the space group P21/c and compounds [MoBraCl(3-a)py3] (a = 2-1 (3, 6)), the same type of crystal lattice was confirmed. Isostructurality was observed also for the orthorhombic trans-(pyH)[MoBr4py2]](Pnma) and compounds 1 and 4, while compound 7 is isostructural to trans-(pyH)[MoCl4py2]. X-ray crystallographic analyses of 2, 5 and 8, obtained by recrystallization of (pyH)[MoBraCl(4-a)py2] (a = 3–1) with different cations, were performed. In these compounds, MoIII is octahedrally coordinated with four halogenido ions at distances 2.4953(6)–2.5920(10) Å and two pyridine molecules at distances 2.195(4)-2.220(4) Å. Trans oriented pyridine rings in compounds 5 and 8 are co-planar, while deviation from co-planarity was noticed for compound 2 (8.9(3)°). The stoichiometry of four coordinated Br and Cl atoms in these compounds is not ideal, since the structure analysis results for 2, 5 and 8 show a mixed occupancy of crystallographic sites; thus, refined population parameters for both atoms (Br and Cl) were calculated.

Ključne riječi
molybdenum(III) complexes; bromo, chloro, pyridine ligands; X-ray analysis

Hrčak ID: 2799

URI
https://hrcak.srce.hr/2799

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