Skip to content

Research at St Andrews

Multielement NMR Studies of the Liquid-Liquid Phase Separation and the Metal-to-Nonmetal Transition in Fluid Lithium- and Sodium-Ammonia Solutions

Research output: Contribution to journalArticle



Matthew T. J. H. Lodge, P. Cullen, Nicholas H. Rees, Neil Spencer, Kiminori Maeda, Jeffrey R. Harmer, Martin O. Jones, Peter P. Edwards

School/Research organisations


H-1, Li-7, N-14 and Na-23 high resolution nuclear magnetic resonance (NMR) measurements are reported for fluid solutions of lithium and sodium in anhydrous liquid ammonia across the metal-to-nonmetal transition (MNM transition), paying particular attention to the phenomenon of liquid liquid phase separation which occurs in the composition/temperature region close to the MNM transition. Our results are discussed in terms of the electronic structure of fluid metal ammonia solutions at low temperatures (ca. 240 K). We find that the electronic phase transition to the metallic state in these solutions, especially at temperatures close to the liquid liquid critical consolute temperature, occurs from a nonmetallic, electrolytic solution containing a predominance of electron spin-paired, (diamagnetic) charged bosonic states. The possible implications of these observations to the nature of the liquid liquid phase separation are discussed, both from the views of N. F. Mott, regarding the MNM transition in sodium ammonia solutions, and those of R. A. Ogg, regarding the possibility of high-temperature superconductivity in these solutions. Similarities between the electronic structure of metal ammonia solutions and the high-temperature cuprate superconductors are also briefly emphasized.



Original languageEnglish
Pages (from-to)13322-13334
Number of pages13
JournalJournal of Physical Chemistry B
Issue number42
Publication statusPublished - 24 Oct 2013

    Research areas


Discover related content
Find related publications, people, projects and more using interactive charts.

View graph of relations

Related by journal

  1. Efficient singlet oxygen photogeneration by zinc porphyrin-dimers upon one- and two-photon excitation

    Mazur, L. M., Roland, T., Leroy-Lhez, S., Sol, V., Samoc, M., Samuel, I. D. W. & Matczyszyn, K., 16 May 2019, In : Journal of Physical Chemistry B. 123, 19, p. 4271-4277 7 p.

    Research output: Contribution to journalArticle

  2. Laccase redox potentials: pH dependence and mutants, a QM/MM study

    Goetze, J. P. & Buehl, M., 8 Sep 2016, In : Journal of Physical Chemistry B. 120, 35, p. 9265-9276 12 p.

    Research output: Contribution to journalArticle

  3. Photochemically induced dynamic nuclear polarization observed by solid-state NMR in a uniformly 13C-isotope labeled photosynthetic reaction center

    Paul, S., Bode, B. E., Matysik, J. & Alia, A., 29 Oct 2015, In : Journal of Physical Chemistry B. 119, 43, p. 13897-13903

    Research output: Contribution to journalArticle

  4. Analysis of influenza A virus NS1 dimer interfaces in solution by pulse EPR distance measurements

    Kerry, P. S., Turkington, H. L., Ackermann, K., Jameison, S. A. & Bode, B. E., 22 Aug 2014, In : Journal of Physical Chemistry B. 118, 37, p. 10882-10888 7 p.

    Research output: Contribution to journalArticle

ID: 249406906