Complexes of molybdenum(V) and lanthanum(III) with 2′,2‴-(2,6-pyridinediyldiethylidene)-dioxamohydrazide (H2dapsox)

Andjelkovic K, Ivanovic-Burmazovic I, Gruden M, Niketic SR (2001)


Publication Type: Journal article, Original article

Publication year: 2001

Journal

Original Authors: Andjelković K., Ivanović-Burmazović I., Gruden M., Niketić S.

Publisher: Taylor & Francis: STM, Behavioural Science and Public Health Titles / Taylor & Francis

Book Volume: 53

Pages Range: 289-300

Journal Issue: 4

URI: https://www.scopus.com/record/display.uri?eid=2-s2.0-0035552934&origin=inward

Abstract

In a template synthesis from ethanolic solution of MoOCl, 2,6-diacetylpyridine (dap), and semioxamazide (sox), in the molar ratio 1:1:2, a dimeric molybdenum(V) complex [MoO(Hdapsox)]Cl · 4HO (where Hdapsox = 2′,2‴-(2,6-pyridinediyldiethylidenedioxa- mohydrazide) was obtained. In a similar reaction, starting from La(NO) · 6HO, the complex [La(Hdapsox)(NO) ](NO) · 1/2EtOH (x = 1,2), having coordination number 9, was obtained. In the latter complex two NO groups were bidentately coordinated in the solid state, but only one in the solution. Besides [MoO(TPP)] (TPP = tetraphenylporphyrin), the molybdenum(V) complex [MoO (Hdapsox)]Cl · 4HO is the only other known example of a dimeric μ-oxodimolybdenum(V) species that is paramagnetic (μ = 0.95 BM). One of the Mo atoms has pentagonal bipyramidal coordination, and the other pentagonal pyramidal coordination. In aqueous solution a rare example of a pentagonal pyramidal ion [MoO(dapsox)] is presumably present. Solution EPR spectra (at 77 K) cannot be related to either of the two known types of Mo(V) species based on the extent of g anisotropy. The substances also were characterized by IR and electronic spectroscopy, and by thermal analysis.

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How to cite

APA:

Andjelkovic, K., Ivanovic-Burmazovic, I., Gruden, M., & Niketic, S.R. (2001). Complexes of molybdenum(V) and lanthanum(III) with 2′,2‴-(2,6-pyridinediyldiethylidene)-dioxamohydrazide (H2dapsox). Journal of Coordination Chemistry, 53(4), 289-300.

MLA:

Andjelkovic, K., et al. "Complexes of molybdenum(V) and lanthanum(III) with 2′,2‴-(2,6-pyridinediyldiethylidene)-dioxamohydrazide (H2dapsox)." Journal of Coordination Chemistry 53.4 (2001): 289-300.

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