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'Alkaline Earth Metals' in keywords Facet   Publication Year 1998  [X]
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1Author    Akiko Kondoh, Takao OiRequires cookie*
 Title    Interaction of Alkaline Earth Metal Ions with Carboxylic Acids in Aqueous Solutions studied by 13 C NMR Spectroscopy  
 Abstract    1? C NMR spectroscopic measurements of aqueous solutions containing alkaline earth metal chloride and a carboxylic acid have been carried out to acquire some insight into the coordination manners of various carboxylic acids to alkaline earth metal ions. The dependence of the l 3 C NMR signal positions of the carboxylate carbons on the magnesium ion concentration in a magnesium carboxylate system is a good index to understand the coordination manner of the carboxylate ion. The upfield shift of the car-boxylate carbon signal with increasing magnesium ion concentration indicates that the carboxylate ion acts as a bidentate ligand to form a ring structure. Only in the citrate systems, the existence of a rela-tively stable complex is evidenced in which the citrate ion is expected to act as a tridentate ligand. 
  Reference    Z. Naturforsch. 53a, 77—91 (1998); received December 30 1997 
  Published    1998 
  Keywords    13 C NMR Spectroscopy, Carboxylic Acids, Alkaline Earth Metals, Coordination, Chemical Shifts 
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 TEI-XML for    default:Reihe_A/53/ZNA-1998-53a-0077.pdf 
 Identifier    ZNA-1998-53a-0077 
 Volume    53