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231224s2014 xx ||||| 00| ||eng c |
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|a (DE-627)NLM245259503
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|a (NLM)25580081
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Salnikov, Denis S
|e verfasserin
|4 aut
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|a Kinetics and mechanism of the reaction of hydrogen sulfide with diaquacobinamide in aqueous solution
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|c 2014
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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|a Band
|b nc
|2 rdacarrier
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|a Date Revised 22.03.2024
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a We conducted a detailed kinetic study of the reaction of the vitamin B12 analog diaquacobinamide ((H2O)2Cbi(III)) with hydrogen sulfide in water from pH 3 to 11. The reaction proceeds in three steps: (i) formation of three different complexes between cobinamide and hydrogen sulfide, viz. (HO-)(HS-)Cbi(III), (H2O)(HS-)Cbi(III), and (HS-)2Cbi(III); (ii) inner-sphere electron transfer (ISET) in the two complexes with one coordinated HS- to form the reduced cobinamide complex [(H)S]Cbi(II); and (iii) addition of a second molecule of hydrogen sulfide to the reduced cobinamide. ISET does not proceed in the (HS-)2Cbi(III) complex. The final products of the reaction between cobinamide and hydrogen sulfide were found to be independent of pH, with the main product being a complex of cobinamide(II) with the anion-radical SSH2-
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|a Journal Article
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|a Cobinamide
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|a Hydrogen sulfide
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|a Kinetics
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|a Reaction mechanisms
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| 650 |
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|a Redox chemistry
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| 700 |
1 |
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|a Makarov, Sergei V
|e verfasserin
|4 aut
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| 700 |
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|a van Eldik, Rudi
|e verfasserin
|4 aut
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|a Kucherenko, Polina N
|e verfasserin
|4 aut
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|a Boss, Gerry R
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t European journal of inorganic chemistry
|d 1998
|g 2014(2014), 25 vom: 24. Sept., Seite 4123-4133
|w (DE-627)NLM098272756
|x 1434-1948
|7 nnns
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| 773 |
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|g volume:2014
|g year:2014
|g number:25
|g day:24
|g month:09
|g pages:4123-4133
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