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Titolo:
SYNTHESIS, CRYSTAL-STRUCTURES AND THERMAL-BEHAVIOR OF (TRIENH(2))[MN(H2O)(3)X-3]X-CENTER-DOT-H2O (X=CL,BR)
Autore:
FEIST M; TROJANOV S; STIEWE A; KEMNITZ E; KUNZE R;
Indirizzi:
HUMBOLDT UNIV BERLIN,INST CHEM,HESS STR 1-2 D-10115 BERLIN GERMANY HUMBOLDT UNIV BERLIN,INST CHEM D-10115 BERLIN GERMANY BUNDESANSTALT MAT FORSCH & PRUFUNG D-12205 BERLIN GERMANY
Titolo Testata:
Zeitschrift fur Naturforschung. B, A journal of chemical sciences
fascicolo: 9, volume: 52, anno: 1997,
pagine: 1094 - 1102
SICI:
0932-0776(1997)52:9<1094:SCATO(>2.0.ZU;2-U
Fonte:
ISI
Lingua:
GER
Keywords:
TRIETHYLENEDIAMMONIUM TRIAQUATRICHLOROMANGANATE(II) CHLORIDE MONOHYDRATE; TRIETHYLENEDIAMMONIUM TRIAQUATRIBROMOMANGANATE(II) BROMIDE MONOHYDRATE; CRYSTAL STRUCTURES; HYDROGEN BONDING; THERMAL ANALYSIS; DTA-TG; TG-MS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
17
Recensione:
Indirizzi per estratti:
Citazione:
M. Feist et al., "SYNTHESIS, CRYSTAL-STRUCTURES AND THERMAL-BEHAVIOR OF (TRIENH(2))[MN(H2O)(3)X-3]X-CENTER-DOT-H2O (X=CL,BR)", Zeitschrift fur Naturforschung. B, A journal of chemical sciences, 52(9), 1997, pp. 1094-1102

Abstract

The compounds (trienH(2))[Mn(H2O)(3)X-3]X.H2O (X = Cl,Br) crystallizeat room temperature from equimolar solutions of triethylenediamine and MnX2.4 H2O in 3M HX in the orthorhombic space group P2(1)2(1)2(1) with a = 6.828( 1), b = 12.128(2), c = 18:367(4) Angstrom, Z = 4 for thechloride, and a = 7.001(1), b = 12.651(3), c = 18.885(4) Angstrom Z =4 for the bromide, respectively. Both structures contain cations (trienH(2))(2+), complex octahedral anions [Mn(H2O)(3)X-3](-). isolated halide ions and water molecules. The thermal behavior has been investigated on the basis of conventional thermoanalytical as well as TG-MS techniques. The thermal decomposition proceeeds in three stages, i.e. thedehydration forming (trienH(2))[MnX4], a phase transition of the tetrahalomanganates(II), and, finally, their decomposition which is influenced by the nature of the atmosphere. The dehydration step is reversible.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/11/20 alle ore 10:14:00