A Well-Defined Hydrocarbon-Soluble Calcium Hydroxide:
Synthesis, Structure, and Reactivity
Christian Ruspic
Sharanappa Nembenna
Anja Hofmeister
Jörg Magull
Sjoerd Harder
Herbert W. Roesky
10.1021/ja065631t.s004
https://acs.figshare.com/articles/journal_contribution/A_Well_Defined_Hydrocarbon_Soluble_Calcium_Hydroxide_Synthesis_Structure_and_Reactivity/3046762
Controlled hydrolysis of a (β-diketiminate)calcium-amide gave a heteroleptic (β-diketiminate)calcium-hydroxide complex that is remarkably stable against ligand exchange and formation of Ca(OH)<sub>2</sub>.
The structure of this dimeric complex shows OH<sup>-</sup> units that symmetrically bridge the Ca<sup>2+</sup> ions. This
hydrocarbon-soluble calcium hydroxide reacted rapidly with CO<sub>2</sub> to produce a gel from which amorphous
CaCO<sub>3</sub> slowly separated. This reaction behavior allows for sol−gel coating with CaCO<sub>3</sub> from an organic
solvent. Reaction with benzophenone did not lead to nucleophilic attack of OH<sup>-</sup> to the carbonyl but gave
a red benzophenone adduct instead.
2006-11-22 00:00:00
ReactivityControlled
benzophenone
carbonyl
coating
sol
adduct
hydroxide
CaCO 3
hydrolysis
heteroleptic
gel
diketiminate
Synthesi
nucleophilic
Calcium
ligand
Hydroxide
OH
dimeric
calcium
ion
formation