manuel_montejo

Department of Physical and Analytical Chemistry Chemistry

Theoretical and Experimental Physical Chemistry Group

		MANUEL MONTEJO GÁMEZ
		Ph. D. Student

		I was born in Jaén (Spain) on 7^th June 1980. I got my Bachelor in Chemistry at the University of Jaén in July of 2002 and started my PhD studies in October of the same year. From October of 2003 to date I have a pre-Doctoral Research Grant afforded by the Fundación Ramón Areces, having got my Master of Research (MPhil) in October of 2005. I teach Laboratory of Chemistry in the Technical Engineering School at the University of Jaén.

		CURRENT RESEARCH

Contact info University of Jaén Department of Physical and Analytical Chemistry Campus Las Lagunillas E-23071 Jaén SPAIN phone: +34-953-212555 fax: +34-953-212940 mail: mmontejo @ujaen.es		The aim of my PhD research is the theoretical and experimental study of the molecular structure and the vibrational spectra of trialkylsilane derivatives with the general formula R₃SiX (with R=CH₃, CH₂CH₃ and X=H, F, Cl, Br, I, OCH3, OCHCH2, OH). Alkylsilanols are well known intermediates in sol-gel processes of organosilicon compounds for the obtention of industrial interest products. Vibrational spectroscopy is a powerful tool for monitoring these reactions, but to use it, a deep knowledge of the vibrational spectra of the species taking part is required. However, silanols are highly reactive and prone to polycondensation species. For this reason, the study of related, although more simple and stable, molecular species could be helpful to achieve a better description (or prediction) of the skeletal modes in silanols, which may be obtained applying a set of scale factors for the force constants transferred from more simple and stable molecular species (SQMFF methodology). Trialkylsilyl derivatives of the type R₃SiX, being X a hydrogen or halogen atom, may be appropriate for this task. I have also taken part in the study of other molecular systems, using the same tools, i.e., experimental spectroscopic techniques (IR, Raman and INS) and Quantum Mechanical calculations (ab-initio and DFT). Additionally, I am working in collaboration with the CAAI (Andalusian Iberic Archaeology Center) in the determination of the chemical composition of pigments and coverings found in archaeological remains dated back to the iberian period, by means of the use of micro-Raman spectroscopy.

RESEARCH PAPERS

◊ A reinvestigation of the n₇ and n₁₀ modes of pyridazine on the basis of the inelastic neutron scattering spectrum analysis.

A. Navarro, J.J. López González, M. Montejo, G.J. Kearley, J. Vázquez

Chem. Phys. Lett. 361 (2002) 483-491

◊ Intermolecular charge transfer and hydrogen bonding in solid furan

M. Montejo, A. Amparo, G.J. Kearley, J. Vázquez, J.J. López González

J. Am. Chem. Soc. 126 (2004) 15087-15095

◊ Vibrational spectrum of methoxytrimethylsilane

M. Montejo, F. Partal Ureña, F. Márquez, I.S. Ignatyev, J.J. López González

J. Mol. Struct.744-747 (2005) 331-338

◊ Structure and vibrational spectra of dimethylsilanediol and methylsilanetriol dimers

I. Ignatyev, M. Montejo, F. Partal Ureña, J.J. López González

Chem. Phys. Lett. 412 (2005) 359-364

◊ Vibrational spectrum of chlorotrimethylsilane

M. Montejo, F. Partal Ureña, F. Márquez, I. Ignatyev, J.J. López González

Spectrochim. Acta A 62 (2005) 293 – 301

◊ The vibrational spectra of (CH3)3SiX (X=H,F,Br) molecules, revisited. Transferable scale factors sets for methylsilane derivatives

M. Montejo, F. Partal Ureña, F. Márquez, J.J. López González

Spectrochim. Acta A 62 (2005) 1058 – 1069

◊ Vibrational spectra and structure of methoxysilanes and products of their hydrolysis.

I. Ignatyev, M. Montejo, F. Partal Ureña, T. Sundius, J.J. López González

Vib. Spectrosc. 40 (2006) 1-9

◊ An experimental and theoretical study of the molecular structure and vibrational spectra of iodotrimetilsilane (SiIMe3)

M. Montejo, S.L. Hinchley, A. Ben Altabef, H.E. Robertson, F. Partal Ureña, D.W.H. Rankin, J.J. López González

Phys. Chem. Chem. Phys. 8 (2006) 477-485

◊ Analysis of pigments and coverings by X-ray diffraction (XRD) and microRaman spectroscopy (MRS) in the cemetery of Tutugi (Galera, Granada, Spain) and the settlement Convento2 (Montemayor, Córdoba, Spain

D. Parras Guijarro, M. Montejo Gámez, N. Ramos Martos, A. Sánchez

Spectrochim. Acta A (IN PRESS, d.o.i:10.1016/j.saa.2005.11.035)