**Author details**

Fongang Fotsing Yannick Stephane1 \* and Bankeu Kezetas Jean Jules2

1 Department of Chemistry, Higher Teachers Training College, University of Maroua, Maroua, Cameroon

2 Department of Chemistry, Faculty of Science, University of Bamenda, Bambili, Cameroon

\*Address all correspondence to: fongangfys@yahoo.fr

© 2020 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
