Correction. Kinetics of the Reaction of Some First-Row Transition Metals with Protoporphyrin IX Dimethyl Ester

1973 ◽  
Vol 12 (6) ◽  
pp. 1464-1464
Author(s):  
Doreen Brisbin ◽  
Geoffrey Richards
Keyword(s):  
Transition Metals ◽  
Dimethyl Ester ◽  
Protoporphyrin Ix ◽  
Kinetics Of

Kinetics of protoporphyrin IX formation in rat oral mucosa and skin after application of 5-aminolevulinic acid and its methylester

2004 ◽  
Author(s):  
Stefan Kristiansson ◽  
Asta Juzeniene ◽  
Petras Juzenas ◽  
Vladimir Iani ◽  
Lennart Löfgren ◽  
...  
Keyword(s):  
Oral Mucosa ◽  
Aminolevulinic Acid ◽  
Protoporphyrin Ix ◽  
Kinetics Of

Kinetics of compound formation in thin film couples of Al and transition metals

1976 ◽  
Vol 13 (1) ◽  
pp. 68-71 ◽  
Author(s):  
J. K. Howard ◽  
R. F. Lever ◽  
P. J. Smith ◽  
P. S. Ho
Keyword(s):  
Thin Film ◽  
Transition Metals ◽  
Compound Formation ◽  
Kinetics Of

Notizen: Binding and Kinetics of 1-Methylimidazol on Fe(III)-Protoporphyrin(IX)dimethylester and Fe(III)-Tetraphenylporphyrin in Chloroform

1976 ◽  
Vol 31 (2) ◽  
pp. 242-245 ◽  
Author(s):  
Eberhard V. Goldammer ◽  
Herbert Zorn
Keyword(s):  
Spin State ◽  
Chemical Exchange ◽  
Phase 1 ◽  
Protoporphyrin Ix ◽  
Bulk Phase ◽  
Paramagnetic Species ◽  
Solvent Exchange ◽  
Line Broadening ◽  
Axial Ligands ◽  
Kinetics Of

Nuclear magnetic line widths data have been used to determine the rate of solvent exchange between the coordination sphere of Fe(III)-protoporphyrin(IX)dimethylester or Fe(III)-tetraphenylporphyrin and the bulk phase of 1-methylimidazol/chloroform. At temperatures below 322 K both porphyrins are in the low-spin state and separate PMR absorption caused by the methyl protons of two 1-methylimidazol molecules complexed in fifth and sixth position of ferri-porphyrins is detected. At T ≳ 320 K an accelerated exchange of these ligands was observed and the underlying kinetic parameters have been extracted. It was found that this exchange takes place when the paramagnetic species is in its low-spin state. For 240 K ≲ T ≲ 290 K dynamic line broadening of bulk phase 1-methylimidazol indicates occurrence of chemical exchange attributed to 1-methylimidazol interacting with ferri-porphyrin in addition to the strongly bound axial ligands.

Synthesis of Poly(Ethylene 2,5-Furanoate): I. Kinetics of 2,5-Dimethyl Ester of Furandicarboxylic Acid Transesterification

2020 ◽  
Vol 992 ◽  
pp. 311-316
Author(s):  
T.A. Molodtsova ◽  
E.V. Boldyreva ◽  
V.A. Klushin
Keyword(s):  
Molecular Weight ◽  
Catalytic Activity ◽  
Dimethyl Ester ◽  
Different Temperatures ◽  
Furandicarboxylic Acid ◽  
Poly Ethylene ◽  
Acid Transesterification ◽  
Kinetics Of

The kinetics of the 2,5-dimethyl ester of furandicarboxylic acid transesterification in the presence of various catalysts at different temperatures was investigated. It was shown that the catalytic activity follows the order: Mn (OAc)2 < Co (OAc)2 < Zn (OAc)2 < Ti (OBu)4. The transesterification catalyzed by Ti (OBu)4 leads to the formation of the polymers with the higher molecular weight compared to Me (OAc)2.

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