Thermal behavior of the saccharinates of K+, Na+, Rb+, Cs+ and NH4 +

Structural inferences

Pance Naumov, Gligor Jovanovski, Sabina Abbrent, Lars Erik Tergenius

    Research output: Contribution to journalArticle

    Abstract

    Four alkali saccharinates: K3(sac)3·2H2O (KSac, ’sac’ denotes saccharinato ion, C7H4NO3S-), triclinic Na3(sac)3·2H2O (NaSac), Rb2(sac)2·H2O (RbSac), Cs(Hsac)(sac)·H2O (CsSac)) and ammonium saccharinate (AmmSac) were synthesized and their thermal decompositions were investigated in the temperature interval 293-873 K by means of thermogravimetric methods (TG, DTG, DTA) in static atmosphere of helium and by DSC in a flow of nitrogen. The thermal and the infrared spectroscopic data of NaSac and AmmSac were correlated with the corresponding structural data, whereas data for KSac, RbSac and CsSac were used to make inferences about their crystal structures. Excluding the anhydrous AmmSac, all compounds were dehydrated prior to the decomposition of the deprotonated saccharinato species. The decomposition temperature of the saccharinato ion is about 130 K higher than the one of pure saccharin. There are two types of water molecules in molar ratio 2:1 in KSac, the overall structure being similar to but not identical with that of NaSac. Coordination properties rather than the hydrogen bonding are responsible for the stronger bonding of the water in the former salt. The existence of molecular saccharin in CsSac is confirmed.

    Original languageEnglish (US)
    Pages (from-to)123-130
    Number of pages8
    JournalThermochimica Acta
    Volume359
    Issue number2
    DOIs
    StatePublished - Aug 28 2000

    Fingerprint

    Ammonium Compounds
    inference
    Saccharin
    Decomposition
    decomposition
    Ions
    Differential thermal analysis
    water
    thermal decomposition
    Helium
    Water
    alkalies
    Hydrogen bonds
    thermal analysis
    ions
    Pyrolysis
    Crystal structure
    helium
    Alkalies
    Salts

    Keywords

    • Ammonium
    • Saccharinates
    • Structure
    • Thermal decomposition

    ASJC Scopus subject areas

    • Instrumentation
    • Condensed Matter Physics
    • Physical and Theoretical Chemistry

    Cite this

    Thermal behavior of the saccharinates of K+, Na+, Rb+, Cs+ and NH4 + : Structural inferences. / Naumov, Pance; Jovanovski, Gligor; Abbrent, Sabina; Tergenius, Lars Erik.

    In: Thermochimica Acta, Vol. 359, No. 2, 28.08.2000, p. 123-130.

    Research output: Contribution to journalArticle

    Naumov, Pance ; Jovanovski, Gligor ; Abbrent, Sabina ; Tergenius, Lars Erik. / Thermal behavior of the saccharinates of K+, Na+, Rb+, Cs+ and NH4 + : Structural inferences. In: Thermochimica Acta. 2000 ; Vol. 359, No. 2. pp. 123-130.
    @article{6fee4c8e96ac4801af0b0e6b3ad093aa,
    title = "Thermal behavior of the saccharinates of K+, Na+, Rb+, Cs+ and NH4 +: Structural inferences",
    abstract = "Four alkali saccharinates: K3(sac)3·2H2O (KSac, ’sac’ denotes saccharinato ion, C7H4NO3S-), triclinic Na3(sac)3·2H2O (NaSac), Rb2(sac)2·H2O (RbSac), Cs(Hsac)(sac)·H2O (CsSac)) and ammonium saccharinate (AmmSac) were synthesized and their thermal decompositions were investigated in the temperature interval 293-873 K by means of thermogravimetric methods (TG, DTG, DTA) in static atmosphere of helium and by DSC in a flow of nitrogen. The thermal and the infrared spectroscopic data of NaSac and AmmSac were correlated with the corresponding structural data, whereas data for KSac, RbSac and CsSac were used to make inferences about their crystal structures. Excluding the anhydrous AmmSac, all compounds were dehydrated prior to the decomposition of the deprotonated saccharinato species. The decomposition temperature of the saccharinato ion is about 130 K higher than the one of pure saccharin. There are two types of water molecules in molar ratio 2:1 in KSac, the overall structure being similar to but not identical with that of NaSac. Coordination properties rather than the hydrogen bonding are responsible for the stronger bonding of the water in the former salt. The existence of molecular saccharin in CsSac is confirmed.",
    keywords = "Ammonium, Saccharinates, Structure, Thermal decomposition",
    author = "Pance Naumov and Gligor Jovanovski and Sabina Abbrent and Tergenius, {Lars Erik}",
    year = "2000",
    month = "8",
    day = "28",
    doi = "10.1016/S0040-6031(00)00519-0",
    language = "English (US)",
    volume = "359",
    pages = "123--130",
    journal = "Thermochimica Acta",
    issn = "0040-6031",
    publisher = "Elsevier",
    number = "2",

    }

    TY - JOUR

    T1 - Thermal behavior of the saccharinates of K+, Na+, Rb+, Cs+ and NH4 +

    T2 - Structural inferences

    AU - Naumov, Pance

    AU - Jovanovski, Gligor

    AU - Abbrent, Sabina

    AU - Tergenius, Lars Erik

    PY - 2000/8/28

    Y1 - 2000/8/28

    N2 - Four alkali saccharinates: K3(sac)3·2H2O (KSac, ’sac’ denotes saccharinato ion, C7H4NO3S-), triclinic Na3(sac)3·2H2O (NaSac), Rb2(sac)2·H2O (RbSac), Cs(Hsac)(sac)·H2O (CsSac)) and ammonium saccharinate (AmmSac) were synthesized and their thermal decompositions were investigated in the temperature interval 293-873 K by means of thermogravimetric methods (TG, DTG, DTA) in static atmosphere of helium and by DSC in a flow of nitrogen. The thermal and the infrared spectroscopic data of NaSac and AmmSac were correlated with the corresponding structural data, whereas data for KSac, RbSac and CsSac were used to make inferences about their crystal structures. Excluding the anhydrous AmmSac, all compounds were dehydrated prior to the decomposition of the deprotonated saccharinato species. The decomposition temperature of the saccharinato ion is about 130 K higher than the one of pure saccharin. There are two types of water molecules in molar ratio 2:1 in KSac, the overall structure being similar to but not identical with that of NaSac. Coordination properties rather than the hydrogen bonding are responsible for the stronger bonding of the water in the former salt. The existence of molecular saccharin in CsSac is confirmed.

    AB - Four alkali saccharinates: K3(sac)3·2H2O (KSac, ’sac’ denotes saccharinato ion, C7H4NO3S-), triclinic Na3(sac)3·2H2O (NaSac), Rb2(sac)2·H2O (RbSac), Cs(Hsac)(sac)·H2O (CsSac)) and ammonium saccharinate (AmmSac) were synthesized and their thermal decompositions were investigated in the temperature interval 293-873 K by means of thermogravimetric methods (TG, DTG, DTA) in static atmosphere of helium and by DSC in a flow of nitrogen. The thermal and the infrared spectroscopic data of NaSac and AmmSac were correlated with the corresponding structural data, whereas data for KSac, RbSac and CsSac were used to make inferences about their crystal structures. Excluding the anhydrous AmmSac, all compounds were dehydrated prior to the decomposition of the deprotonated saccharinato species. The decomposition temperature of the saccharinato ion is about 130 K higher than the one of pure saccharin. There are two types of water molecules in molar ratio 2:1 in KSac, the overall structure being similar to but not identical with that of NaSac. Coordination properties rather than the hydrogen bonding are responsible for the stronger bonding of the water in the former salt. The existence of molecular saccharin in CsSac is confirmed.

    KW - Ammonium

    KW - Saccharinates

    KW - Structure

    KW - Thermal decomposition

    UR - http://www.scopus.com/inward/record.url?scp=0034726506&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=0034726506&partnerID=8YFLogxK

    U2 - 10.1016/S0040-6031(00)00519-0

    DO - 10.1016/S0040-6031(00)00519-0

    M3 - Article

    VL - 359

    SP - 123

    EP - 130

    JO - Thermochimica Acta

    JF - Thermochimica Acta

    SN - 0040-6031

    IS - 2

    ER -