Chemistry and Forensic Science Colloquium

A Bridge Too Far: Testing the Limits of Polypyridyl Ligands in Bridging Subunits of a Soluble Coordination Polymer

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As part of the School of Science and Technology Chemistry and Forensic Science Colloquium, Dr Tony Keene, University College Dublin presents: A Bridge Too Far: Testing the Limits of Polypyridyl Ligands in Bridging Subunits of a Soluble Coordination Polymer.

  • From: Wednesday 8 November 2017, 1 pm
  • To: Wednesday 8 November 2017, 2 pm
  • Location: 193, Nottingham Trent University, Clifton Campus, Clifton Lane, Nottingham, NG11 8NS

Past event

Event details

As part of the School of Science and Technology Chemistry and Forensic Science Colloquium, Dr Tony Keene, University College Dublin presents: A Bridge Too Far: Testing the Limits of Polypyridyl Ligands in Bridging Subunits of a Soluble Coordination Polymer.

Abstract:

A Bridge Too Far: Testing the Limits of Polypyridyl Ligands in Bridging Subunits of a Soluble Coordination Polymer [1]

Tony D. Keene, School of Chemistry, University College Dublin

Starting with a stable subunit of a coordination polymer, {[Cu(L)]2}n (1 where L = salicylidene-2-aminophenol), we have explored the ability of polypyridyl ligands (P) to bridge the monomer complex species to form ten {[Cu(L)]2(P)} complexes. The identity and solution stability of the [Cu(L)] units has been investigated through a combined UV-vis/EPR experiment and it has been found to be a stable secondary building unit for the construction of coordination polymers. The reorganisation of [Cu(L)] units to a new coordination polymer on addition of 4,4’-bipyridine markedly changes the connectivity of the structure but also the magnitude of the antiferromagnetic interactions through reorientation of the Cu(II) orbitals. We also present the structure of 1, 80 years after its synthesis was first reported.[2] Further complex formation using monopyridines has highlighted a potential relationship between the pKa of the pyridine and likelihood of product formation in this system.

References

[1] S. V. F. Beddoe,A. J. Fitzpatrick, J. R. Price, N. Mallo, J. E. Beves, G. G. Morgan, J. A. Kitchen and T. D. Keene, Cryst. Growth Des., accepted 02/10/2017, manuscript no. cg-2017-01256d.

[2] P. Pfeiffer, Th. Hesse, H. Pfitzner, W. Scholl and H. Thielert, J. Prakt. Chem., 1937, 149, 217-296.

This seminar is hosted by Dr Anthony Fitzpatrick.

All welcome.

For any queries please contact Dr Sophie Benjamin.

Location details

Address:

Nottingham Trent University
Clifton Campus
Clifton Lane
Nottingham
NG11 8NS

Past event

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