In this paper we report the synthesis and the structural characterization of two polynuclear chlorocadmate(II) systems with ribbon-like structure of formula (H(2)eten)[Cd2Cl6] . H2O (H(2)eten = ethylethylenediamine dication) and (Hetpipd)(2)[Cd5Cl12(H2O)(2)] . H2O (Hetpipd = 1-ethylpiperidine cation), respectively. (H(2)eten)[Cd2Cl6] . H2O crystallizes in space group P2(1)/a. The unit cell dimensions are a = 16.910(2), b = 13.570(2), c = 6.701(3) Angstrom, beta = 94.93(2)degrees, V = 1532(1) Angstrom(3), Z = 4. The final R value is 0.029 (R(w) = 0.028). Its structure consists of organic dications, polymeric ribbons formed by two infinite zig-zag chains running along the z axis linked by a common edge between adjacent octahedra and uncoordinated water molecules. The (Hetpipd)(2)[Cd5Cl12(H2O)(2)] . H2O crystallizes in space group C2/c. The unit cell dimensions are a = 26.811(2), b = 6.643(3), c = 21.724(2) Angstrom, beta = 111.25(3)degrees, V = 3606(2) Angstrom(3), Z = 4. The final R value is 0.039 (R(w) = 0.045). Its structure consists of alternate trinuclear [Cd3Cl6(H2O)(2)] and dinuclear [Cd2Cl6](2-) units, forming polymeric ribbons, organic cations and uncoordinated water molecules. Both packings are strengthened by hydrogen-bond interactions between anions and cations. The thermal properties for both compounds are discussed.
POLYNUCLEAR CHLOROCADMATE(II) COMPOUNDS WITH RIBBON-LIKE STRUCTURES - SYNTHESIS, STRUCTURAL CHARACTERIZATION AND THERMAL-BEHAVIOR / Corradi, Anna; Cramarossa, Mr; Pellacani, Gian Carlo; Battaglia, Lp; Giusti, J.. - In: GAZZETTA CHIMICA ITALIANA. - ISSN 0016-5603. - STAMPA. - 124:(1994), pp. 481-486.
POLYNUCLEAR CHLOROCADMATE(II) COMPOUNDS WITH RIBBON-LIKE STRUCTURES - SYNTHESIS, STRUCTURAL CHARACTERIZATION AND THERMAL-BEHAVIOR
CORRADI, Anna;PELLACANI, Gian Carlo;
1994
Abstract
In this paper we report the synthesis and the structural characterization of two polynuclear chlorocadmate(II) systems with ribbon-like structure of formula (H(2)eten)[Cd2Cl6] . H2O (H(2)eten = ethylethylenediamine dication) and (Hetpipd)(2)[Cd5Cl12(H2O)(2)] . H2O (Hetpipd = 1-ethylpiperidine cation), respectively. (H(2)eten)[Cd2Cl6] . H2O crystallizes in space group P2(1)/a. The unit cell dimensions are a = 16.910(2), b = 13.570(2), c = 6.701(3) Angstrom, beta = 94.93(2)degrees, V = 1532(1) Angstrom(3), Z = 4. The final R value is 0.029 (R(w) = 0.028). Its structure consists of organic dications, polymeric ribbons formed by two infinite zig-zag chains running along the z axis linked by a common edge between adjacent octahedra and uncoordinated water molecules. The (Hetpipd)(2)[Cd5Cl12(H2O)(2)] . H2O crystallizes in space group C2/c. The unit cell dimensions are a = 26.811(2), b = 6.643(3), c = 21.724(2) Angstrom, beta = 111.25(3)degrees, V = 3606(2) Angstrom(3), Z = 4. The final R value is 0.039 (R(w) = 0.045). Its structure consists of alternate trinuclear [Cd3Cl6(H2O)(2)] and dinuclear [Cd2Cl6](2-) units, forming polymeric ribbons, organic cations and uncoordinated water molecules. Both packings are strengthened by hydrogen-bond interactions between anions and cations. The thermal properties for both compounds are discussed.Pubblicazioni consigliate
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