An intermediate-spin iron(III) porphyrin complex with a vinylidene group inserted into a iron-nitrogen bond: paramagnetic susceptibility, EPR, and Moessbauer properties

1982 ◽  
Vol 21 (4) ◽  
pp. 1427-1430 ◽  
Author(s):  
Daniel. Mansuy ◽  
Irene. Morgenstern-Badarau ◽  
Marc. Lange ◽  
Pierre. Gans
Keyword(s):  
Paramagnetic Susceptibility ◽  
Porphyrin Complex ◽  
Intermediate Spin ◽  
Nitrogen Bond

An iron(III)-porphyrin complex with a vinylidene group inserted into an iron-nitrogen bond: relevance to the structure of the active oxygen complex of catalase

1981 ◽  
Vol 103 (10) ◽  
pp. 2899-2901 ◽  
Author(s):  
Bernard Chevrier ◽  
Raymond Weiss ◽  
Marc Lange ◽  
Jean Claude Chottard ◽  
Daniel Mansuy
Keyword(s):  
Active Oxygen ◽  
Porphyrin Complex ◽  
Oxygen Complex ◽  
Nitrogen Bond

Saddle-shaped six-coordinate iron(iii) porphyrin complex with unusual intermediate-spin electronic structure

2009 ◽  
pp. 2180 ◽  
Author(s):  
Ru-Jen Cheng ◽  
Chia-Wei Chao ◽  
Ya-Ping Han ◽  
Yen-Chou Chen ◽  
Chiao-Han Ting
Keyword(s):  
Electronic Structure ◽  
Porphyrin Complex ◽  
Intermediate Spin ◽  
Spin Electronic

PARAMAGNETIC SUSCEPTIBILITY OF UPt AND CePt

1978 ◽  
Vol 39 (C6) ◽  
pp. C6-781-C6-782 ◽  
Author(s):  
John G. Huber
Keyword(s):  
Paramagnetic Susceptibility

Synthesis of the dioxygen complex of oil cobalt (II) porphyrin complex and study of its oxygenating properties

2019 ◽  
Vol 28 ◽  
pp. 69-72
Author(s):  
M.M. Aghaguseynova ◽  
◽  
G.I. Amanullayeva ◽  
Z.E. Bayramova
Keyword(s):  
Porphyrin Complex

Direct incorporation of [ 18F] into aliphatic systems: A promising Mncatalysed labelling technique for PET imaging

2020 ◽  
Vol 13 ◽  
Author(s):  
Sara Cesarec ◽  
Jonathan A. Robson ◽  
Laurence S. Carroll ◽  
Eric O. Aboagye ◽  
Alan C. Spivey
Keyword(s):  
Positron Emission Tomography ◽  
Pet Imaging ◽  
Emission Tomography ◽  
Labelling Technique ◽  
Porphyrin Complex ◽  
Mild Conditions ◽  
Drug Substances ◽  
Positron Emission ◽  
Site Selective ◽  
Direct Incorporation

Background: One of the challenges in positron emission tomography (PET) is labelling complex aliphatic molecules. Objective: To develop a method of metal-catalysed radiofluorination that is site-selective and works in moderate to good yields under facile conditions. Methods: We report here on the optimisation of an aliphatic C-H to C-18F bond transformation catalysed by a Mn(porphyrin) complex. Results: The successful oxidation of 11 aliphatic molecules including progesterone are reported. Radiochemical Incorporations (RCIs) up to 69% were achieved within 60 min without the need for pre-activation or specialist equipment. Conclusion: The method features mild conditions (60 °C) and promises to constitute a valuable approach to labelling of biomolecules and drug substances.

scholarly journals Influence of Copper(I) Halides on the Reactivity of Aliphatic Carbodiimides

2020 ◽  
Vol 3 (1) ◽  
pp. 20
Author(s):  
Valentina Ferraro ◽  
Marco Bortoluzzi
Keyword(s):  
Density Functional Theory ◽  
Electronic Structure ◽  
General Formula ◽  
Electron Density ◽  
Density Functional ◽  
Functional Theory ◽  
Fukui Functions ◽  
Bond Lengths ◽  
Linear Complexes ◽  
Nitrogen Bond

The influence of copper(I) halides CuX (X = Cl, Br, I) on the electronic structure of N,N′-diisopropylcarbodiimide (DICDI) and N,N′-dicyclohexylcarbodiimide (DCC) was investigated by means of computational DFT (density functional theory) methods. The coordination of the considered carbodiimides occurs by one of the nitrogen atoms, with the formation of linear complexes having a general formula of [CuX(carbodiimide)]. Besides varying the carbon–nitrogen bond lengths, the thermodynamically favourable interaction with Cu(I) reduces the electron density on the carbodiimides and alters the energies of the (NCN)-centred, unoccupied orbitals. A small dependence of these effects on the choice of the halide was observable. The computed Fukui functions suggested negligible interaction of Cu(I) with incoming nucleophiles, and the reactivity of carbodiimides was altered by coordination mainly because of the increased electrophilicity of the {NCN} fragments.

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