Dr Timothy Dickens

Tutor for Graduate Admissions; Director of Studies - Chemistry.
FRSC

Elected

2013

Subject areas

Email

tkd25@cam.ac.uk

College phone

(3)38263
Dr Timothy Dickens
Biography

BSc, Chemistry 1976-1979 University of Kent.

PhD, Theoretical Chemistry 1979-1982 University of Kent.

Post Doctoral Research, Chemistry, 1982-1984 Univesity of Oxford.

Scientist and IT Manager, 1984-2008, Glaxo.

2008- Head of II Dept of Chemisty, University of Cambridge.

2011- IT Coordinator, School of Physical Sciences, University of Cambridge.

2011-2013, Bye-Fellow, Peterhouse Cambridge.

2013, Official Fellow, Peterhouse Cambridge.

Roles and committees
  • Official Fellow
  • Tutor for Graduate Admissions
  • Director of Studies in Natural Sciences (Physical)
  • Chair of IT Committee
  • Food and Wine Committee
  • Graduate Admissions Committee
  • Staff Committee
Research interests

My own academic interest is the study of Dispersion forces and Exchange potentials. These are particularly relevant in calculating the physical properties of Molecular Crystals such as sublimation energies and packing arrangements. They are very important in determining the conformation of molecules and calculating the binding energies of compounds at drug receptor sites.

More recently I have been performing NMR Ring Current calculations on various congregate aromatic systems. This is an application of Graph Theory. Another application of which that has long fascinated me, is proving non repetition changes in Bell ringing. Sadly the use of Graph Theory in proving whether a peal is true is in decline as “brute force” computer simulation techniques have become more prevalent.

Publications

Ring-Current Properties of Bispentalenes and Related Structures - Comparison of Ab Initio and Huckel-London-Pople-McWeeny (HLPM) 'Topological' Calculations.
TK Dickens, RB Mallion  – Croatica Chemica Acta  (2017)  90,  369
(DOI: 10.5562/cca3219)

Topological Ring-Currents in Conjugated Systems.
TK Dickens, RB Mallion  – MATCH Commun. Math. Comput. Chem.  (2016)  76, 295

Comparisons of π-Electron Ring-Current and Bond-Current Patterns Calculated by Topological (‘HLPM’) and Ab Initio (‘Ipso-Centric’) Formalisms for Two Isomeric Conjugated Hydrocarbons, Corazulene and Cornaphthalene.
TK Dickens, RB Mallion – Croatica Chemica Acta  (2015)  88,  221
(DOI: 10.5562/cca2622)

Topological ring-current and bond-current properties of the altans of certain K-factorizable conjugated systems containing "fixed" single-bonds.
TK Dickens, RB Mallion – The journal of physical chemistry. A (2015) 119, 5019
(DOI: 10.1021/acs.jpca.5b02826)

Topological ring-currents and bond-currents in the altan-[r,s]-coronenes.
TK Dickens, RB Mallion – Chemical communications (Cambridge, England) (2015) 51,1819
(DOI: 10.1039/C4CC07322C)

Ring-current assessment of the Annulene-Within-an-Annulene model for some large coupled super-ring conjugated-systems.
TK Dickens, RB Mallion – Croatica Chemica Acta (2014) 87, 221
(DOI: 10.5562/cca2397)

pi-Electron Ring-Currents and Bond-Currents in Some Conjugated Altan-Structures.
TK Dickens, RB Mallion – The journal of physical chemistry. A (2014) 118, 3688
(DOI: 10.1021/jp502585f)

Topological Hückel-London-Pople-McWeeny ring currents and bond currents in altan -corannulene and altan -coronene.
TK Dickens, RB Mallion – The journal of physical chemistry. A (2014) 118, 933
(DOI: 10.1021/jp411524k)

An analysis of topological ring-currents and their use in assessing the Annulene-Within-an-Annulene model for super-ring conjugated systems.
TK Dickens, RB Mallion – Croatica Chemica Acta (2013) 86, 387
(DOI:       10.5562/cca2291)

π-Electron ring-currents and bond-currents in [10,5]-Coronene and related structures conforming to the 'Annulene-Within-an-Annulene' model.
TK Dickens, RB Mallion – Physical chemistry chemical physics : PCCP (2013) 15, 8245
(DOI: 10.1039/c3cp00053b)

The regular [r, s]-Coronenes and the 'Annulene-Within-an-Annulene' rule.
TK Dickens, RB Mallion – RSC Advances (2013) 3, 15585
(DOI: 10.1039/c3ra42913j)

Topological ring-currents and bond-currents in some nonalternant isomers of coronene.
TK Dickens, RB Mallion – The journal of physical chemistry. A (2011) 115, 13877
(DOI: 10.1021/jp205964t)

Topological Ring Currents in the "Empty" Ring of Benzo-Annelated Perylenes.
TK Dickens, RB Mallion – The journal of physical chemistry. A (2011) 115, 351
(DOI: 10.1021/jp1096103)

Some comments on topological approaches to the π-electron currents in conjugated systems.
TK Dickens, JANF Gomes, RB Mallion – Journal of Chemical Theory and Computation(2011) 7, 3661
(DOI: 10.1021/ct2002539)

Topological ring-current assessment of the 'annulene-within-an-annulene' model in [N]-circulenes and some structures related to kekulene.
TK Dickens, RB Mallion  – Chemical Physics Letters  (2011)  517, 98
(DOI: 10.1016/j.cplett.2011.10.002)

Ring Currents and the PCP Rule.
AT Balaban, TK Dickens, I Gutman, RB Mallion  – Croatica Chemica Acta  (2010)  83,  209

E-WorkBook for Chemistry
T Dickens  – Chemistry World  (2009)  6,  70

The use of computer graphics to colour code the molecular surface in order to illustrate chemical properties derived either from quantum mechanics or other means.
T Dickens, M Dorman, C Prout  – Journal of Molecular Graphics  (1983)  1, 48
(DOI: 10.1016/0263-7855(83)80008-3)