Journal article
A copper(II) coordination polymer of formate-bridged dimers: an alternating S=1/2 antiferromagnetic chain
Journal of coordination chemistry, Vol.76(3-4), pp.403-413
16 Feb 2023
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Reaction of 1,3-propanediamine with copper(II) perchlorate hexahydrate in basic solution in the presence of trimethyl orthoformate and o-iodophenol serendipitously formed sodium [triformato-diperchlorato-di-1,3-propanediaminodicopper(II)], Na[Cu-2(HCO2)(3)(1,3-pn)(2)](ClO4)(2) (1). Single-crystal X-ray diffraction measurements show the compound to be a coordination polymer with the Cu(II) ions alternately bridged in mu(1,1)- and mu(1,3)-fashion by the formate ions. The sodium ions are coordinated to both formate ions and perchlorate ions in the lattice. Magnetic measurements were made over the range 1.8-310 K and show the presence of a singlet ground state at low temperature, the mu(1,1)-bridged copper ions being strongly antiferromagnetically coupled. The data were modeled equally well, within experimental error, by the alternating chain model and the dimer model with a Curie-Weiss correction for weak inter-dimer interactions, yielding C = 0.432(2) emu-K/mol-Oe, J/k(B) = -94.3(9) K and J' = -2.4(1.5) K (H= -J n-sigma S-1.S-2).
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Details
- Title
- A copper(II) coordination polymer of formate-bridged dimers: an alternating S=1/2 antiferromagnetic chain
- Creators
- Anthony W. W. Addison - Drexel University, ChemistryRaymond J. J. Butcher - Howard UniversityMark M. M. Turnbull - Clark University
- Publication Details
- Journal of coordination chemistry, Vol.76(3-4), pp.403-413
- Publisher
- Taylor & Francis
- Number of pages
- 11
- Grant note
- Kresge Foundation IMR-0314773 / NSF; National Science Foundation (NSF) Drexel University
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemistry
- Identifiers
- 991021861291204721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Chemistry, Inorganic & Nuclear