Tetrahedral and pseudo-tetrahedral complexes of cobalt(II) with trimethylamine N-oxide

Herlocker, David W.; Drago, Russell S.

doi:10.1021/ic50066a001

Cited by 16 publications

(3 citation statements)

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“…Reinterpretation would suggest that, in solution, the polar solvent molecules (dichloromethane and acetonitrile) interact additionally with the metal centre to alter the field symmetry, but on crystallization these more weakly attracted solvent molecules are excluded. The earlier finding (Herlocker & Drago, 1968) that excess of the rather strongly bonding, but sterically demanding, amine oxide ligand displaces the spectral features towards those of [Co(Me3NO)4]-(C10)2 (with ease of displacement I > Br > C1) is compatible with this view,…”

Section: ) Crystals Of (2) Suitable For Diffractometry Were Obtamentioning

confidence: 62%

“…CoCI2(Me3PO)2 (Edelmann & Behrens, 1986). Arising out of one spectroscopic study on Co halide CoX2L2 complexes with trimethylamine oxide (tmno) (Herlocker & Drago, 1968), it was suggested that their electronic spectra obtained from solutions and from the solids are so different as to indicate that in the crystalline condition there is ligand bridging to give five-coordination (Herlocker, 1969). But as has been remarked quite recently, there is a paucity of structural information on tmno compounds generally (Goggin, 1987).…”

Section: Introductionmentioning

confidence: 99%

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Structures of dichlorobis(trimethylamine oxide)cobalt(II), diiodobis(trimethylamine oxide)cobalt(II), dichlorobis(trimethylamine oxide)zinc and dibromobis(trimethylamine oxide)zinc

Jin¹,

Nieuwenhuyzen²,

Robinson³

et al. 1992

Acta Crystallogr C

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Section: ) Crystals Of (2) Suitable For Diffractometry Were Obtamentioning

confidence: 62%

Section: Introductionmentioning

confidence: 99%

Structures of dichlorobis(trimethylamine oxide)cobalt(II), diiodobis(trimethylamine oxide)cobalt(II), dichlorobis(trimethylamine oxide)zinc and dibromobis(trimethylamine oxide)zinc

Jin¹,

Nieuwenhuyzen²,

Robinson³

et al. 1992

Acta Crystallogr C

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“…19 The procedure followed has been previously reported. 20 Corrections were made for the diamagnetic susceptibilities of the ligands and anions using Pascal's constants.…”

Section: Methodsmentioning

confidence: 99%

Nuclear magnetic resonance study of the interaction of cobalt(II) and nickel(II) ions with thiamine pyrophosphate

White¹,

Drago²

1971

Inorg. Chem.

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the cold trap. The flask contents solidified on cooling. Three recrystallizations of the solid from benzene yielded diphenoxyphenyldifluorophosphorane (2.1 g, 33%) as a colorless crystalline solid, mp 68-70°.Phenoxydimethyldifluorophosphorane.-Dimethyltrifluorophosphorane (5.90 g, 0.050 mol) was added with stirring to phenyl trimethylsilyl ether (8.30 g, 0.050 mol) in an apparatus similar to that used in the previous experiment. The mixture was stirred under reflux for 6 hr and fluorotrimethylsilane (3.90 g, 81%) was collected in the cold trap. Distillation of the residue in vacuo yielded phenoxydimethyldifluorophosphorane (7.2 g, 75%), bp 72-74°(0.2 mm), as a colorless mobile liquid.A gray viscous residue (2.6 g) was left in the flask.Aryloxyphosphonium Hexafluorophosphates.-The following experiments illustrate the use of sodium fluoride in obtaining aryloxyphosphonium hexafluorophosphates in high yields from certain of the reactions we report.Tetraphenoxyphosphonium Hexafluorophosphate.-Phosphorus pentafluoride (5.0 g, 0.040 mol) was condensed onto a mixture of phenyl trimethylsilyl ether (13.2 g, 0.080 mol) and sodium fluoride (0.5 g) at liquid nitrogen temperature in a glass London, respectively.

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Characterization of a Robust Co^II Fluorescent Complex Deposited Intact On HOPG

Heras-Ojea

Reta

Rosado

et al. 2014

Chemistry A European J

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The new diimine fluorescent ligand ACRI-1 based on a central acridine yellow core is reported along with its coordination complex [Co2 (ACRI-1)2 ] (1), a fluorescent weak ferromagnet. Due to the strong fluorescence of the acridine yellow fluorophore, it is not completely quenched when the ligand is coordinated to Co(II) . The magnetic properties of bulk complex 1 and its stability in solution have been studied. Complex 1 has been deposited on highly ordered pyrolitic graphite (HOGP) from solution. The thin films prepared have been characterized by AFM, time-of-flight secondary ion mass spectrometry (TOF-SIMS), grazing incidence X-ray diffraction (GIXRD), X-ray absorption spectroscopy (XAS), X-ray magnetic circular dichroism (XMCD) and theoretical calculations. The data show that the complex is robust and remains intact on the surface of graphite.

show abstract

Tetrahedral and pseudo-tetrahedral complexes of cobalt(II) with trimethylamine N-oxide

Cited by 16 publications

References 1 publication

Structures of dichlorobis(trimethylamine oxide)cobalt(II), diiodobis(trimethylamine oxide)cobalt(II), dichlorobis(trimethylamine oxide)zinc and dibromobis(trimethylamine oxide)zinc

Structures of dichlorobis(trimethylamine oxide)cobalt(II), diiodobis(trimethylamine oxide)cobalt(II), dichlorobis(trimethylamine oxide)zinc and dibromobis(trimethylamine oxide)zinc

Nuclear magnetic resonance study of the interaction of cobalt(II) and nickel(II) ions with thiamine pyrophosphate

Characterization of a Robust Co^II Fluorescent Complex Deposited Intact On HOPG

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Tetrahedral and pseudo-tetrahedral complexes of cobalt(II) with trimethylamine N-oxide

Cited by 16 publications

References 1 publication

Structures of dichlorobis(trimethylamine oxide)cobalt(II), diiodobis(trimethylamine oxide)cobalt(II), dichlorobis(trimethylamine oxide)zinc and dibromobis(trimethylamine oxide)zinc

Structures of dichlorobis(trimethylamine oxide)cobalt(II), diiodobis(trimethylamine oxide)cobalt(II), dichlorobis(trimethylamine oxide)zinc and dibromobis(trimethylamine oxide)zinc

Nuclear magnetic resonance study of the interaction of cobalt(II) and nickel(II) ions with thiamine pyrophosphate

Characterization of a Robust CoII Fluorescent Complex Deposited Intact On HOPG

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Characterization of a Robust Co^II Fluorescent Complex Deposited Intact On HOPG