Zusammenfassung
The crystals of Ca(H(2)Edta).2H(2)O (orthorhombic system, a = 8.5919(7) angstrom, b = 17.807(2) angstrom, c = 18.94](2) angstrom; Z = 8, space group Pbca) precipitate from solutions of Na(2)H(2)Edta-2H(2)O and CaCl2. The Ca atom is surrounded by the oxygen atoms of the water molecule and the carboxyl groups of the five neighboring H(2)Edta(2-) anions with protonated nitrogen atoms (distorted ...
Zusammenfassung
The crystals of Ca(H(2)Edta).2H(2)O (orthorhombic system, a = 8.5919(7) angstrom, b = 17.807(2) angstrom, c = 18.94](2) angstrom; Z = 8, space group Pbca) precipitate from solutions of Na(2)H(2)Edta-2H(2)O and CaCl2. The Ca atom is surrounded by the oxygen atoms of the water molecule and the carboxyl groups of the five neighboring H(2)Edta(2-) anions with protonated nitrogen atoms (distorted octahedron). As a result, a three-dimensional framework of [Ca(H2O)H(2)Edta)] with built-in crystal water molecules is formed.