Skip to content

Research at St Andrews

Bis-hypodentate coordination in a classical Werner-type complex: Synthesis and structure of [Co(en-N,N)2(enH-N)2]Br5·H2O

Research output: Contribution to journalArticlepeer-review

Author(s)

David B. Cordes, Ryan R. Tarak, Shay M. McDonald, Scott A. Cameron, Charles R. Clarke, Allan G. Blackman

School/Research organisations

Abstract

The synthesis, characterisation (elemental analysis, 1H and 13C NMR, UV–Vis), X-ray crystal structure and pKa values of the bis-hypodentate complex cis-[Co(en-N,N')2(enH-N)2]Br5·H2O are reported. Reaction of cis-[Co(en-N,N')2Cl2]+ in neat ethylenediamine for 1 min followed by acid quenching and cation exchange chromatography gives cis-[Co(en-N,N')2(enH-N)2]Br5·H2O on crystallisation of the product from water containing added LiBr. X-ray structural characterisation of the complex as the dihydrate confirms both the presence of two hypodentate ethylenediamine ligands protonated at the terminal N atoms, and their cis disposition. The complex displays pKa values of 7.36 ± 0.06 and 7.96 ± 0.06 (I = 1.0 M, NaClO4), and undergoes base hydrolysis to give cis-[Co(en-N,N')2(OH)2]+ over the [OH-] range 0.10–0.50 M. No evidence for the formation of [Co(en-N,N')3]3+ in this reaction was obtained.

Close

Details

Original languageEnglish
Pages (from-to)1227-1230
Number of pages4
JournalPolyhedron
Volume52
Early online date26 Jun 2012
DOIs
Publication statusPublished - Mar 2013

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

View graph of relations

Related by author

  1. New variants of (110)-oriented layered lead bromide perovskites, templated by formamidinium or pyrazolium

    Guo, Y., Elliott, C., McNulty, J., Cordes, D., Slawin, A. & Lightfoot, P., 20 Jul 2021, (Accepted/In press) In: European Journal of Inorganic Chemistry. In press

    Research output: Contribution to journalArticlepeer-review

  2. A luminescent 1D silver polymer containing [2.2]paracyclophane ligands

    Mackenzie, C. F. R., Delforce, L., Rota Martir, D., Cordes, D. B., Slawin, A. M. Z. & Zysman-Colman, E., 12 Jul 2021, (Accepted/In press) In: Frontiers in Chemistry.

    Research output: Contribution to journalArticlepeer-review

  3. Wide-bite-angle disphosphine ligands in thermally activated delayed fluorescent copper(I) complexes: impact on the performance of electroluminescence applications

    Li, C., Mackenzie, C. F. R., Said, S. A., Pal, A. K., Haghighatbin, M. A., Babaei, A., Sessolo, M., Cordes, D. B., Slawin, A. M. Z., Kamer, P. C. J., Bolink, H., Hogan, C. F. & Zysman-Colman, E., 1 Jul 2021, (E-pub ahead of print) In: Inorganic Chemistry. Articles ASAP, 17 p.

    Research output: Contribution to journalArticlepeer-review

  4. Synthesis of palladium complexes derived from amido linked N-heterocyclic carbenes and their use in Suzuki cross coupling reactions

    Chauhan, R. S., Nagar, S., Chatterjee, S., Goswami, D., Cordes, D. B., Slawin, A. M. Z. & Tawde, T., 7 Jun 2021, (E-pub ahead of print) In: Zeitschrift für Anorganische und Allgemeine Chemie. Early View, 9 p.

    Research output: Contribution to journalArticlepeer-review

  5. Supramolecular packing of alkyl substituted Janus face all-cis 2,3,4,5,6-pentafluorocyclohexyl motifs

    Clark, J., Taylor, A., Geddis, A., Neyyappadath, R. M., Piscelli, B., Yu, C., Cordes, D. B., Slawin, A. M. Z., Cormanich, R., Guldin, S. & O'Hagan, D., 4 Jun 2021, (E-pub ahead of print) In: Chemical Science. Advance Article, 8 p.

    Research output: Contribution to journalArticlepeer-review

Related by journal

  1. Synthesis and characterization of a hydrogen bonded metal-organic cocrystal: exploration of its DNA binding study

    Khan, S., Alothman, Z. A., Mohammad, M., Islam, M. S., Slawin, A., Wabaidur, S. M., Islam, M. M. & Mir, M. H., 18 Feb 2020, (E-pub ahead of print) In: Polyhedron. 114454.

    Research output: Contribution to journalArticlepeer-review

  2. Synthesis, characterization, and structural properties of mercury(II), cadmium(II) and zinc(II) tripiperidinophosphine chalcogenide complexes

    Ebnou, F., M’Haiham, M., Ebeid, K., Carpenter-Warren, C. L., Slawin, A. M. Z., Woollins, J. D., Ben Dhia, M. T. & Sanhoury, M. A., 1 Feb 2019, In: Polyhedron. 159, p. 206-211

    Research output: Contribution to journalArticlepeer-review

  3. Synthesis, structure and magnetic properties of an unusual oligonuclear iron(III)-cobalt(III) compound with oxido-, sulfato- and cyanido-bridging ligands

    Setifi, F., Setifi, Z., Konieczny, P., Glidewell, C., Benmansour, S., Gómez-García, C. J., Grandjean, F., Long, G. J., Pelka, R. & Reedijk, J., 14 Oct 2018, (E-pub ahead of print) In: Polyhedron. In press

    Research output: Contribution to journalArticlepeer-review

  4. A panchromatic, near infrared Ir(III) emitter bearing a tripodal C^N^C ligand as a dye for dye-sensitized solar cells

    Hierlinger, C., Flint, H. V., Cordes, D. B., Slawin, A. M. Z., Gibson, E. A., Jacquemin, D., Guerchais, V. & Zysman-Colman, E., 8 Feb 2018, In: Polyhedron. 140, p. 109-115

    Research output: Contribution to journalArticlepeer-review

  5. Optimised synthesis and characterisation of 1-adamantyltrimethylphosphonium iodide

    Mansour, R., Nejman, P., Taylor, L. J., Chalmers, B. A., Rey, F., Bengueddach, A., Woollins, J. D., Slawin, A. M. Z. & Kilian, P., 5 Sep 2017, In: Polyhedron. 133, p. 302-306 5 p.

    Research output: Contribution to journalArticlepeer-review

ID: 66477471

Top