Home Physical Sciences Thermische Zersetzung und Lösungskalorimetrie von Ammoniumsamariumchloriden/Thermal Decomposition and Solution Calorimetry of Ammonium Samarium Chlorides
Article
Licensed
Unlicensed Requires Authentication

Thermische Zersetzung und Lösungskalorimetrie von Ammoniumsamariumchloriden/Thermal Decomposition and Solution Calorimetry of Ammonium Samarium Chlorides

  • C. Hennig and H. Oppermann
Published/Copyright: June 2, 2014
Become an author with De Gruyter Brill
Author Information Explore this Subject
Zeitschrift für Naturforschung B
From the journal Zeitschrift für Naturforschung B Volume 52 Issue 12

Abstract

We determined the decomposition equilibria of ammonium samarium chlorides (NH4)2SmCl5 and NH4Sm2Cl7 by total pressure measurements and derived their thermody­ namical data from the decomposition functions. The enthalpies of formation were compared with the results of the solution calorimetry. The heats of solution of all solid phases in the system SmCl3-NH4Cl and of Sm2O3 were measured in 4n HCl. The enthalpies of formation of ammonium samarium chlorides were derived from the enthalpies of formation of SmCl3 and of NH4Cl and their heats of solution.

Data by total pressure measurement

ΔH°B((NH4)2SmCl5,f,298) =-407,7 ± 2,9 kcal/mol;

S0((NH4)2SmCl5,f,298) = 84,0 ± 4,5 cal/K-mol;

ΔH°B((NH4)Sm2Cl7,f,298) = -576,8 ± 3,4 kcal/mol;

S°(NH4Sm2Cl7,f,298) = 98,1 ± 5,5 cal/K-mol.

Data by solution calorimetry

ΔH°B(SmCl3,f,298) = -248,1 ± 0,8 kcal/mol;

ΔH°B((NH4),SmCl5,f,298) = -404 ,3 ± 1,1 kcal/mol;

ΔH°B(NH4Sm9Cl7,f,298)= -572,3 ± 1,8 kcal/mol.

Keywords: Ammonium Samarium Chlorides; Samarium Chloride; Synthesis; Thermodynamical Data; Solution Calorimetry
Received: 1997-9-29
Published Online: 2014-6-2
Published in Print: 1997-12-1

© 1946 – 2014: Verlag der Zeitschrift für Naturforschung

Articles in the same Issue

  1. Aluminiumphosphate mit nichtzentrosymmetrischen Schicht-und Raumnetzstrukturen aus topologisch verwandten Motiven: 1. KAl2(PO4)2(OH)·4H2O/Aluminum Phosphates with Non-Centrosym metric Layer-and Framework-Structures of Topologically Related Motifs 1. KAl2(PO4)2(OH)·4H2O
  2. Aluminiumphosphate mit nichtzentrosymmetrischen Schicht- und Raumnetzstrukturen aus topologisch verwandten Motiven: 2. KAl2(PO4)2(OH)·2H2O/Aluminum Phosphates with Non-Centrosymmetric Layer- and Framework-Structures of Topologically Related Motifs: 2. KAl2(PO4)2(OH)·2H2O
  3. Metall(II)-Diazin Komplexe: Kristallstrukturen von Cd(pyrazin)Br2, Cd(pyrazin)I2, Cu(pyrazin)Cl2 und Cd(pyrimidin)(NO3)2·2H2O/ Metal(II) Diazine Complexes: Crystal Structures of Cd(pyrazine)Br2, Cd(pyrazine)I2, Cu(pyrazine)Cl2, and Cd(pyrimidine)(NO3)2·2H2O.
  4. Untersuchungen zum ternären System Bi/Te/O, II. Thermisches Verhalten und Koexistenzbeziehungen von Bi2O2Te/Investigations of the Ternary System Bi/Te/O, II. The Thermal Behaviour and the Relations of Phase Coexistences of Bi2O2Te
  5. Quaternary Equiatomic Compounds LnZnSbO (Ln = La - Nd, Sm) with ZrCuSiAs-Type Structure
  6. Different Connectivities in Supramolecular Aggregates of Trinuclear GoId(I) Complexes with the Sacconi-Ligand N(CH2CH2PPh2)3
  7. Chiral Phosphine Ligands in the Structural Chemistry of Gold
  8. Die Kristallstruckturen der Phosphaniminato-Komplexe.[Ti3IVCl8(NPMe3)3]Cl und [V2III/IVCl4(NPPh3)3]/Crystal Structures of the Phosphoraneiminato Complexes [Ti3IVCl8(NPMe3)3]Cl and [V2III/IVCl4(NPPh3)3]
  9. Synthese und Kristallstrukturbestimmung von Additionsverbindungen aus Alkyldimethylbromsilanen und N-Trimethylsilylimidazol/Syntheses and Crystal Structure Determination of Addition Compounds of Alkyldimethylbromosilanes and N-Trimethylsilylimidazole
  10. Darstellung und Kristallstruktur der oligomeren Iodo-d10-metallate(II) [M(I)(CH3CN)4]4[Cd6I16] · 1,5 CH3CN mit M(I) = Cu, Li/Synthesis and Crystal Structure of the Oligomeric Iodo-d10-metallate(II) [M(I)(CH3CN)4]4[Cd6I16] · 1,5 CH3CN with M(I) = Cu, Li
  11. [Ni3Se(o-C6H4{CH2Se}2)3]2- und [Ni4(SeiC3H7)8], die ersten höherkernigen NickeI(II)-Komplexe mit vollständiger Selen-Ligandensphäre [Ni3Se(o-C6H4{CH2Se}2)3]2- and [Ni4(SeiC3H7)8], the First Polynuclear Nickel(II) Complexes with Complete Selenium Ligand Spheres
  12. Zur Chemie der 1,3,5-Triaza-2-phosphorin-4,6-dione, Teil XIII. Darstellung und Röntgenstrukturanalyse des 1,3,5-Trimethyl-2-trichlormethyl-Derivats. Reaktionen einiger 1,3,5-Trimethyl-1,3,5-triaza-2-(R)-phosphorin-4,6-dione/Chemistry of the l,3,5-Triaza-2-phosphorine-4.6-diones, Part XIII. Synthesis and X -Ray Crystal Structure Determination of the 1,3,5-Trimethyl-2- trichlorom ethyl Derivative. Reactions of Some 1,3,5-Trimethyl-1,3,5-triaza-2-(R )-phosphorine-4,6-diones
  13. Thermische Zersetzung und Lösungskalorimetrie von Ammoniumsamariumchloriden/Thermal Decomposition and Solution Calorimetry of Ammonium Samarium Chlorides
  14. Synthesis of the Caffeine Metabolites 5-Acetylamino-6-formylamino- 3-methyluracil (AFMU) and 5-Acetylamino-6-amino-3-methyluracil (AAMU) on a Preparative Scale
  15. Synthesis and Mesomorphic Properties of Azo Compounds Derived from Phenyl-and Thienyl-1,3,4-Thiadiazole
  16. Chiral Hexa-and Nona-Substituted 1,3,5-Triphenylbenzenes
  17. Synthesis and Crystal Structure Determination of (R,S)-Diphenyl 1-CyclohexyI-1-(4-nitroanilino)methanephosphonate
  18. Notizen: C4S82- and C16S184-: Intermediates in the Synthesis of PoIy(Carbon Sulfide)
  19. Subject Index
  20. Authors Index
https://doi.org/10.1515/znb-1997-1213
Keywords for this article
Ammonium Samarium Chlorides; Samarium Chloride; Synthesis; Thermodynamical Data; Solution Calorimetry

Articles in the same Issue

  1. Aluminiumphosphate mit nichtzentrosymmetrischen Schicht-und Raumnetzstrukturen aus topologisch verwandten Motiven: 1. KAl2(PO4)2(OH)·4H2O/Aluminum Phosphates with Non-Centrosym metric Layer-and Framework-Structures of Topologically Related Motifs 1. KAl2(PO4)2(OH)·4H2O
  2. Aluminiumphosphate mit nichtzentrosymmetrischen Schicht- und Raumnetzstrukturen aus topologisch verwandten Motiven: 2. KAl2(PO4)2(OH)·2H2O/Aluminum Phosphates with Non-Centrosymmetric Layer- and Framework-Structures of Topologically Related Motifs: 2. KAl2(PO4)2(OH)·2H2O
  3. Metall(II)-Diazin Komplexe: Kristallstrukturen von Cd(pyrazin)Br2, Cd(pyrazin)I2, Cu(pyrazin)Cl2 und Cd(pyrimidin)(NO3)2·2H2O/ Metal(II) Diazine Complexes: Crystal Structures of Cd(pyrazine)Br2, Cd(pyrazine)I2, Cu(pyrazine)Cl2, and Cd(pyrimidine)(NO3)2·2H2O.
  4. Untersuchungen zum ternären System Bi/Te/O, II. Thermisches Verhalten und Koexistenzbeziehungen von Bi2O2Te/Investigations of the Ternary System Bi/Te/O, II. The Thermal Behaviour and the Relations of Phase Coexistences of Bi2O2Te
  5. Quaternary Equiatomic Compounds LnZnSbO (Ln = La - Nd, Sm) with ZrCuSiAs-Type Structure
  6. Different Connectivities in Supramolecular Aggregates of Trinuclear GoId(I) Complexes with the Sacconi-Ligand N(CH2CH2PPh2)3
  7. Chiral Phosphine Ligands in the Structural Chemistry of Gold
  8. Die Kristallstruckturen der Phosphaniminato-Komplexe.[Ti3IVCl8(NPMe3)3]Cl und [V2III/IVCl4(NPPh3)3]/Crystal Structures of the Phosphoraneiminato Complexes [Ti3IVCl8(NPMe3)3]Cl and [V2III/IVCl4(NPPh3)3]
  9. Synthese und Kristallstrukturbestimmung von Additionsverbindungen aus Alkyldimethylbromsilanen und N-Trimethylsilylimidazol/Syntheses and Crystal Structure Determination of Addition Compounds of Alkyldimethylbromosilanes and N-Trimethylsilylimidazole
  10. Darstellung und Kristallstruktur der oligomeren Iodo-d10-metallate(II) [M(I)(CH3CN)4]4[Cd6I16] · 1,5 CH3CN mit M(I) = Cu, Li/Synthesis and Crystal Structure of the Oligomeric Iodo-d10-metallate(II) [M(I)(CH3CN)4]4[Cd6I16] · 1,5 CH3CN with M(I) = Cu, Li
  11. [Ni3Se(o-C6H4{CH2Se}2)3]2- und [Ni4(SeiC3H7)8], die ersten höherkernigen NickeI(II)-Komplexe mit vollständiger Selen-Ligandensphäre [Ni3Se(o-C6H4{CH2Se}2)3]2- and [Ni4(SeiC3H7)8], the First Polynuclear Nickel(II) Complexes with Complete Selenium Ligand Spheres
  12. Zur Chemie der 1,3,5-Triaza-2-phosphorin-4,6-dione, Teil XIII. Darstellung und Röntgenstrukturanalyse des 1,3,5-Trimethyl-2-trichlormethyl-Derivats. Reaktionen einiger 1,3,5-Trimethyl-1,3,5-triaza-2-(R)-phosphorin-4,6-dione/Chemistry of the l,3,5-Triaza-2-phosphorine-4.6-diones, Part XIII. Synthesis and X -Ray Crystal Structure Determination of the 1,3,5-Trimethyl-2- trichlorom ethyl Derivative. Reactions of Some 1,3,5-Trimethyl-1,3,5-triaza-2-(R )-phosphorine-4,6-diones
  13. Thermische Zersetzung und Lösungskalorimetrie von Ammoniumsamariumchloriden/Thermal Decomposition and Solution Calorimetry of Ammonium Samarium Chlorides
  14. Synthesis of the Caffeine Metabolites 5-Acetylamino-6-formylamino- 3-methyluracil (AFMU) and 5-Acetylamino-6-amino-3-methyluracil (AAMU) on a Preparative Scale
  15. Synthesis and Mesomorphic Properties of Azo Compounds Derived from Phenyl-and Thienyl-1,3,4-Thiadiazole
  16. Chiral Hexa-and Nona-Substituted 1,3,5-Triphenylbenzenes
  17. Synthesis and Crystal Structure Determination of (R,S)-Diphenyl 1-CyclohexyI-1-(4-nitroanilino)methanephosphonate
  18. Notizen: C4S82- and C16S184-: Intermediates in the Synthesis of PoIy(Carbon Sulfide)
  19. Subject Index
  20. Authors Index
Sign up now to receive a 20% welcome discount
Institutional Access
How does access work?
Have an idea on how to improve our website?
Please write us.
© 2026 De Gruyter Brill
Downloaded on 2.3.2026 from https://www.degruyterbrill.com/document/doi/10.1515/znb-1997-1213/html
Scroll to top button