Autooxidation of hydrazine catalyzed by tetrasulphophthalocyanines

Wagnerová, D. M.; Schwertnerová, E.; Vepřek-Šiška, J.

doi:10.1135/cccc19730756

Cited by 42 publications

(21 citation statements)

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“…EPR spectroscopic studies conducted at low temperature have indicated that hydroxylamine forms stable adducts with Co and 4␤(SO 3 − )FePcs [467]. It has also been shown that hydroxylamine is catalytically oxidized by molecular oxygen in the presence of 4␤(SO 3 − )MPcs in aqueous solutions [467][468][469]. From these results, one would expect that phthalocyanines, when adsorbed on a graphite electrodic surface would catalyze the electrochemical oxidation of NH 2 OH.…”

Section: Electrooxidation Of Hydroxylaminementioning

confidence: 90%

Metallophthalocyanine-based molecular materials as catalysts for electrochemical reactions

Zagal¹,

Griveau²,

Silva³

et al. 2010

Coordination Chemistry Reviews

541

415

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Section: Electrooxidation Of Hydroxylaminementioning

confidence: 90%

Metallophthalocyanine-based molecular materials as catalysts for electrochemical reactions

Zagal¹,

Griveau²,

Silva³

et al. 2010

Coordination Chemistry Reviews

541

415

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“…Millipore water was obtained from Milli-Q Water Systems (Millipore Corp. Bedford, MA, USA). Alumina (~0.05, 0.3, 1, 10 mm), dimethylformide (DMF), dimethyl sulfoxide (DMSO), 1,8-diazabicyclo [5.4.0]undec-7-ene (DBU), Cu(PPh 3 ) 3 Br, tetrabutylammoniumtetrafluoroborate (TBABF 4 ), urea, trimethylamine and hydrazine monohydrate were purchased from Sigma Aldrich. Acetonitrile (ACN) was obtained from Minima.…”

Section: Methodsmentioning

confidence: 99%

“…Hence, hydrazine is employed as a test analyte in this work. Metallophthalocyanines (MPc) are known for their electrocatalytic behaviour towards many analytes including hydrazine [2][3][4]. There are several methods which have been reported for the electrocatalytic detection of hydrazine using MPc complexes, including selfassembly, carbon paste electrode and adsorption (dip-dry or drop-dry) [2].…”

Section: Introductionmentioning

confidence: 99%

Electrode Modification through Click Chemistry Using Ni and Co Alkyne Phthalocyanines for Electrocatalytic Detection of Hydrazine

2017

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This work reports on the development of sensors for the detection of hydrazine using glassy carbon electrodes (GCE) modified with phthalocyanines through click chemistry. Tetrakis(5‐hexyn‐oxy) cobalt(II) phthalocyanine (complex 2) and tetrakis(5‐hexyn‐oxy) nickel(II) phthalocyanine (complex 3) were employed as electrode modifiers for hydrazine detection. The GCE was first grafted via the in situ diazotization of a diazonium salt, rendering the GCE surface layered with azide groups. From this point, the 1, 3‐dipolar cycloaddition reaction, catalysed by a copper catalyst was utilised to “click” the phthalocyanines to the surface of the grafted GCE. The modified electrodes were characterized by scanning electrochemical microscopy, X‐ray photoelectron spectroscopy and cyclic voltammetry. The electrografted CoP2‐clicked‐GCE and NiP3‐clicked‐GCE exhibited electrocatalytic activity towards the detection of hydrazine. The limit of detection (LoD) for the CoPc‐GCE was 6.09 μM, while the NiPc‐GCE had a LoD of 8.69 μM. The sensitivity was 51.32 μA mM−1 for the CoPc‐GCE and 111.2 μA mM−1 for the NiPc‐GCE.

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“…When excess anline is added, the conductivity increases slightly due to some solvolysis of the octahedral species as indicated in [5]. This equilibrium lies incompletely to the right.…”

Section: Omeasurement Of Degree Of Solvolysis Of X In [S]mentioning

confidence: 93%

“…The sequence [4] also In the case of X = NO3-, additional solvolysis occurs in acetonitrile with some dissociation of reflects increasing binding of oxygen as the the remaining coordinated nitrate group in [2], counter-ion ligand donates more charge, al- [5], and [6]. It seems probable that reaction l is though the position of the nitrate group seems driven, in part, by the solvolysis of X-creating a anomalous.…”

Section: Omeasurement Of Degree Of Solvolysis Of X In [S]mentioning

confidence: 99%

Monomeric di-oxygen adducts of high spin cobalt(II) complexes

Khare¹,

Lee‐Ruff²,

Lever³

1976

Can. J. Chem.

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The complexes Co(s-R2en)2X2 where R is Me, Et, and X is Cl, Br, I, NCS, or NO3, are shown to reversibly bind di-oxygen in polar solvents. Electron spin resonance and spectrophotometric measurements reveal the formation of 1:1 adducts which are fairly stable towards further reaction. Thermodynamic binding constants are determined and are found to be larger than hitherto reported for such Co(II)–O2 systems. This is ascribed to the high basicity of the amines employed. Conductivity measurements reveal extensive hydrogen bonding for these adducts in butyronitrile.

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Autooxidation of hydrazine catalyzed by tetrasulphophthalocyanines

Cited by 42 publications

References 0 publications

Metallophthalocyanine-based molecular materials as catalysts for electrochemical reactions

Metallophthalocyanine-based molecular materials as catalysts for electrochemical reactions

Electrode Modification through Click Chemistry Using Ni and Co Alkyne Phthalocyanines for Electrocatalytic Detection of Hydrazine

Monomeric di-oxygen adducts of high spin cobalt(II) complexes

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