Dra. Tejel studied chemistry at the University of Zaragoza where she also obtained her Ph.D degree in 1986. After a postdoctoral stay at the CNRS (LCC in Toulouse), she returned to the ICMA as a Senior Scientist in 1990 and was promoted to Scientific Researcher (CSIC) in 2003. Since 2005 she has led the research group 'Inorganic Molecular Architecture and Applications' at the ICMA and, currently at the ISQCH.

She has been involved in studies on the synthesis of polynuclear complexes with and without metal-metal bonds, the activation of the C-Cl bonds, and the analysis of dynamics by NMR. Currently, her major interest concerns the synthesis of new organometallic complexes that show different coordination modes, aimed to achieve new catalytic applications. Her interests also focus on fundamental aspects of the molecular activation of oxygen and its transfer to organic substrates. Related studies try to use non-innocent ligands as electron stores or to search for metals with unusual geometries for new catalytic reactions.