Structural Chemistry

, Volume 20, Issue 1, pp 31–35 | Cite as

The heat capacities and standard entropies of corresponding potassium and ammonium ion species: is there a constant difference?

  • H. Donald B. Jenkins
  • Joel F. LiebmanEmail author
  • Maja Ponikvar
  • Steve Scheiner
Original Research


It is found that there is a nearly constant difference between the normalized values of the heat capacities and standard entropies of potassium and ammonium ion salts in the condensed phase, both solid salts and their aqueous solutions. Extension to the free gaseous ions remains moot.


Potassium ion Ammonium ion Aqueous solutions Gas phase ion chemistry Salts Heat capacity Standard entropy Quantum thermochemistry Estimation 


  1. 1.
    Liebman JF, Romm MJ, Meot-Ner (Mautner) M, Cybulski SM, Scheiner S (1991) J Phys Chem 95:1112. doi: 10.1021/j100156a018 CrossRefGoogle Scholar
  2. 2.
    Liebman JF, Scheiner S (1999) Struct Chem 10:391. doi: 10.1023/A:1022051829674 CrossRefGoogle Scholar
  3. 3.
    Liebman JF (1997) Struct Chem 8:313. doi: 10.1007/BF02252975 CrossRefGoogle Scholar
  4. 4.
    Fortes AD, Brodholt JP, Wood IG, Vocadlo L, Jenkins HDB (2001) J Chem Phys 115:7006. doi: 10.1063/1.1398104 CrossRefGoogle Scholar
  5. 5.
    Johnson DA (1988) J Chem Soc, Dalton Trans 445. doi: 10.1039/dt9880000445
  6. 6.
    Jenkins HDB, Roobottom HK, Passmore J, Glasser L (1996) Inorg Chem 38:3609. doi: 10.1021/ic9812961 CrossRefGoogle Scholar
  7. 7.
    Gal J-F, Maria P-C, Massi L, Mayeux C, Burk P, Tammiku-Taul J (2007) Int J Mass Spectrom 267:7. doi: 10.1016/j.ijms.2007.03.004 CrossRefGoogle Scholar
  8. 8.
    Frisch MJ, Trucks GW, Schlegel HB, Scuseria GE, Robb MA, Cheeseman JR, Zakrzewski VG, Montgomery JJA, Stratmann RE, Burant JC, Dapprich S, Millam JM, Daniels AD, Kudin KN, Strain MC, Farkas O, Tomasi J, Barone V, Cossi M, Cammi R, Mennucci B, Pomelli C, Adamo C, Clifford S, Ochterski J, Petersson GA, Ayala PY, Cui Q, Morokuma K, Malick DK, Rabuck AD, Raghavachari K, Foresman JB, Cioslowski J, Ortiz JV, Baboul AG, Stefanov BB, Liu G, Liashenko A, Piskorz P, Komaromi I, Gomperts R, Martin RL, Fox DJ, Keith T, Al-Laham MA, Peng CY, Nanayakkara A, Gonzalez C, Challacombe M, Gill PMW, Johnson B, Chen W, Wong MW, Andres JL, Gonzalez C, Head-Gordon M, Replogle ES, Pople JA (2003) Gaussian03. Gaussian, Inc, Pittsburgh, PAGoogle Scholar
  9. 9.
    Loewenschuss A, Marcus Y (1987) J Phys Chem Ref Data 16:61Google Scholar
  10. 10.
    Chase MW Jr (1998) NIST-JANAF Thermochemical Tables, 4th edn., J Phys Chem Ref Data Monograph 9Google Scholar
  11. 11.
    Wagman DD, Evans WH, Parker VB, Schumm RH, Halow I, Bailey SM, Churney KL, Nuttall RL (1982) The NBS Tables of Chemical Thermodynamic Properties. Selected Values for Inorganic and C1 and C2 Organic Substances in SI Units J Phys Chem Ref Data 11(Suppl 2)Google Scholar
  12. 12.
    Benson SW (1976) Thermochemical kinetics: methods for the estimation of thermochemical data, 2nd edn. John Wiley & Sons, New YorkGoogle Scholar
  13. 13.
    Hunter EPL, Lias SG (1998) J Phys Chem Ref Data 27:413CrossRefGoogle Scholar
  14. 14.
    Jenkins HDB, Glasser L (2003) Inorg Chem 42:8702. doi: 10.1021/ic030219p CrossRefGoogle Scholar
  15. 15.
    Latimer WM (1951) J Am Chem Soc 73:1480. doi: 10.1021/ja01148a021 CrossRefGoogle Scholar
  16. 16.
    Latimer WM (1952) Oxidation potentials of the elements and their potentials in aqueous solutions, 2nd edn. Prentice Hall, Englewood Cliffs, NJGoogle Scholar
  17. 17.
    Snow CP (1959) The two cultures and the scientific revolution–The Rede lecture. Cambridge University Press, CambridgeGoogle Scholar
  18. 18.
    Hoffmann R (1988) Solids and surfaces: a chemist’s view of bonding in extended structures. VCH, WeinheimGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • H. Donald B. Jenkins
    • 1
  • Joel F. Liebman
    • 2
    Email author
  • Maja Ponikvar
    • 3
  • Steve Scheiner
    • 4
  1. 1.University of WarwickCoventryUK
  2. 2.Department of Chemistry and BiochemistryUniversity of Maryland, Baltimore CountyBaltimoreUSA
  3. 3.Jožef Stefan InstituteLjubljanaSlovenia
  4. 4.Department of Chemistry and BiochemistryUtah State UniversityLoganUSA

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