Ligand function and substrate effect on metal-oxygen stretching frequencies in somecis-dioxomolybdenum(VI) complexes of bivalent tridentate Schiff bases

Prabhakaran, C. P.; Nair, Balakrishnan G.

doi:10.1007/bf00618576

Cited by 16 publications

(3 citation statements)

References 14 publications

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“…Characteristic IR bands [15][16][17][18] 2 to Ru(III) ion in its heterobimetallic complexes. The positions of bands due to (C-O)(naphtholic) and (C-O) in these complexes suggest that naphtholate oxygen bridges two metal centers.…”

Section: Infrared Spectramentioning

confidence: 99%

“…Monometallic complexes of N-(2-hydroxynaphthalen-1-yl)methylenebenzoylhydrazide with a variety of transition metals have been reported [15][16][17][18][19][20][21], but there is no report of heterobimetallic complexes of this ligand containing manganese and ruthenium. Thus, keeping in view the importance of manganese and ruthenium complexes, an attempt has been made to synthesize and characterize the heterobimetallic complexes of manganese and ruthenium derived from N-(2-hydroxynaphthalen-1-yl)methylenebenzoylhydrazide.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and spectral studies on heterobimetallic complexes of manganese and ruthenium derived from N-(2-hydroxynaphthalen-1-yl)methylenebenzoylhydrazide

Singh

Kar

Lal³

et al. 2009

Journal of Coordination Chemistry

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Section: Infrared Spectramentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis and spectral studies on heterobimetallic complexes of manganese and ruthenium derived from N-(2-hydroxynaphthalen-1-yl)methylenebenzoylhydrazide

Singh

Kar

Lal³

et al. 2009

Journal of Coordination Chemistry

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“…Thus, the IR data indicate that the Schiff bases behave as tridentate ligands coordinating through phenolic oxygen, enolic oxygen and azomethine nitrogen. [35][36][37][38][39][40][41][42] The coordination geometry around molybdenum can also be described as distorted octahedral in which the dianionic ligand is ligated in a planar tridentate manner forming one five-membered and another six-membered metallocycle involving cisdioxomolybdenum moiety.…”

Section: Cis-moomentioning

confidence: 99%

Synthesis, structure and applications of [cis-dioxomolybdenum(VI)-(ONO)] type complexes

Chakravarthy

Chand

2011

J Chem Sci

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Oxo-molybdenum chemistry is of great interest since such units are found in the active sites of a majority of molybdo-enzymes. In order to mimic the biological systems, a number of oxo-molybdenum complexes have been synthesised and studied. This review describes synthesis, structure and applications of oxomolybdenum complexes particularly cis-MoO 2 (L)(D) where L stands for a dianionic tridentate ONO ligand and D for a donor solvent molecule/monodentate ligand. The ligand moieties are derived from Schiff base, hydrazide Schiff base and other related tridentate ligands L(H) 2 . The coordination geometry around the Mo center in these complexes can be best described as a distorted octahedron in which the ONO-tridentate ligand occupies meridional position with two anionic oxygen donors mutually trans and are cis to the oxygen centers of the cis-dioxo group. Mostly the applications of cis-MoO 2 -(ONO) type complexes seen in literature are oxo transfer reactions like epoxidation, sulfoxidation and phosphine oxidation reactions.

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Dioxo‐ and Oxovanadium(V) Complexes of Biomimetic Hydrazone ONO Donor Ligands: Synthesis, Characterisation, and Reactivity

Maurya

Khurana

Schulzke

et al. 2001

Euro J of Inorganic Chem

117

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The dioxovanadium(V) complexes M[VO2(L)solv] (2, 5, 6) have been isolated along with dimeric, oxo‐bridged monooxovanadium complexes with the formula [{VOL}2µ‐O] (1, 4), and characterised by their spectral and thermogravimetric properties and reactivity patterns. H2L is the hydrazone H2{(R‐sal)‐iNH} [sal derives from salicylaldehyde (R = H) or p‐Cl‐salicylaldehyde (R = Cl)] or H2hap‐iNH, where hap is the o‐hydroxyacetophenone moiety, and iNH stands for isonicotinic acid hydrazide. In the isolated potassium (M = K) complexes 2a, 5 and 6, solv is a water molecule, which was exchanged for methanol or DMSO in the respective solutions as shown by 51V NMR. Treatment of the dimeric (1 and 4) or anionic complexes (2a and 5) with H2O2 yielded (unstable) oxoperoxovanadium complexes K[VO(O2)L] (7, 8). Acidification of 1 and 4 afforded oxohydroxo complexes. When compound 2a is dissolved in methanol, it is partly deoxygenated to form [VO(OMe)(HOMe)L] (9), the crystal and molecular structures of which have been determined, confirming the ONO binding mode of L in its enolate form.

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Ligand function and substrate effect on metal-oxygen stretching frequencies in somecis-dioxomolybdenum(VI) complexes of bivalent tridentate Schiff bases

Cited by 16 publications

References 14 publications

Synthesis and spectral studies on heterobimetallic complexes of manganese and ruthenium derived from N-(2-hydroxynaphthalen-1-yl)methylenebenzoylhydrazide

Synthesis and spectral studies on heterobimetallic complexes of manganese and ruthenium derived from N-(2-hydroxynaphthalen-1-yl)methylenebenzoylhydrazide

Synthesis, structure and applications of [cis-dioxomolybdenum(VI)-(ONO)] type complexes

Dioxo‐ and Oxovanadium(V) Complexes of Biomimetic Hydrazone ONO Donor Ligands: Synthesis, Characterisation, and Reactivity

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