Abstract
This first chapter is a general introduction to the book in which we give a
background on the Ca-Cσ-bond containing organocalcium compounds, which are less
studied as compared to other organometallic compounds.
We describe the interest in synthesizing the synthesized organometallic intermediates
and products as well as their application fields such as chemistry, biology, medicine,
pharmacology, and industry.
It is indicated that such compounds are not well-known because of the low reactivity of
calcium elements, the low solubility of oraganocalcium intermediates and products in
common organic solvents, their instability resulting from their high reactivity, cause
their degradation and the degradation of their preferred ethereal solvents.
Despite the significant difference in electronegativity value between the two elements,
the Ca-Cσ-bonds have a covalent polar character. In many cases, the coordination
considerably decreases the calcium electropositive character, facilitating the formation
of the Ca-Cσ-covalent bond.
The difficulties in synthesizing such compounds, their degradation property and
catalytic behaviour as well as the spectroscopy technics used to identify their structures
are also described.
Keywords: Alkylcalcium, Alkaline earth metals, Ca-Cσ bond, Calcium, Calcium coordination, Catalytic properties, Calcium reactivity, Covalent bond, d- orbitals, Degradation, Ethereal solvents, Electronegativity, Intermediates, Ionic bond, Organometallic, Organocalcium, Phenylcalcium, Solvent degradation, Spectroscopic technics.
