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Synthesis of Water-Soluble Calcium Complexes Based on (1-Hydroxyethylidene)diphosphonic, Nitrilotrimethylenephosphonic, Ethylenediaminetetraacetic Acids, and 2-Aminoethanol.
- Source :
- Russian Journal of General Chemistry; 2023 Suppl 3, Vol. 93, pS738-S747, 10p
- Publication Year :
- 2023
-
Abstract
- Water insoluble calcium hydroxide Ca(OH)<subscript>2</subscript> or calcium carbonate CaCO<subscript>3</subscript> react with aqueous solution of (1-hydroxyethylidene)diphosphonic acid and nitrilotrimethylenephosphonic acid to form poorly soluble calcium (1-hydroxyethylidene)diphosphonate trihydrate and calcium nitrilotrimethylenephosphonate trihydrate, respectively. The reaction of calcium chloride CaCl<subscript>2</subscript> with the disodium salt of ethylenediaminetetraacetic acid afforded poorly soluble calcium ethylenediaminetetraacetate hexahydrate. The reaction of suspensions of complexes of (1-hydroxyethylidene)calcium diphosphonate trihydrate, calcium ethylenediaminetetetraacetate hexahydrate and calcium nitrilotrimethylenephosphonate trihydrate with 2-aminoethanol led to the formation of water-soluble (1-hydroxyethylidene)bis(2-aminoethanol)calcium diphosphonate, tris(2-aminoethanol)calcium nitrilotrimethylenephosphonate, and bis(2-aminoethanol)calcium ethylenediaminetetraacetate, respectively. The molecular structure of calcium ethylenediaminetetraacetate hexahydrate was characterized by single-crystal X-ray diffraction method. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10703632
- Volume :
- 93
- Database :
- Complementary Index
- Journal :
- Russian Journal of General Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 175164431
- Full Text :
- https://doi.org/10.1134/S1070363223160119