Higher stability constants for complexation of low valent, than of high valent, transition metal ions by saturated tertiary amine macrocyclic tetraaza ligands

1991 ◽  
Vol 182 (2) ◽  
pp. 131-133 ◽  
Author(s):  
Dirk Guldi ◽  
Fritz Wasgestian ◽  
Esther Zeigerson ◽  
Dan Meyerstein
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Stability Constants ◽  
Tertiary Amine ◽  
Transition Metal Ions ◽  
Low Valent ◽  
High Valent ◽  
Macrocyclic Tetraaza

scholarly journals Stability constants of Nicotinic acid (vitamin B3) complexes with transition metal ions

2020 ◽  
Vol 2 (7) ◽  
pp. 136-138
Author(s):  
Shalini Dengle ◽  
Mahesh Shivoorkar ◽  
Momin Nishad Parvin ◽  
Ayesha Nuzat Durrani
Keyword(s):  
Transition Metal ◽  
Nicotinic Acid ◽  
Metal Ions ◽  
Stability Constants ◽  
Transition Metal Ions ◽  
Vitamin B3

Metal Complexes of 6-Hydroxymethylpyridine-2-carboxylic Acid

1962 ◽  
Vol 15 (4) ◽  
pp. 786 ◽  
Author(s):  
RW Green ◽  
GKS Ooi
Keyword(s):  
Carboxylic Acid ◽  
Transition Metal ◽  
Metal Ions ◽  
Metal Complexes ◽  
Stability Constants ◽  
Steric Hindrance ◽  
Transition Metal Ions ◽  
Complexing Agent ◽  
Ph Titration ◽  
The Stability

Spectrophotometric and pH-titration methods have been used to determine the stability constants at 25 �C of complexes between transition metal ions and the anion of 6-hydroxymethylpyridine-2-carboxylic acid. This anion is found to be a weaker base and a weaker complexing agent than the pyridine-2-carboxylate ion. There is some evidence for steric hindrance of tris complexes.

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