Ruspic, Christian; Nembenna, Sharanappa; Hofmeister, Anja; Magull, Joerg; Harder, Sjoerd; Roesky, Herbert W.:

A Well-Defined Hydrocarbon-Soluble Calcium Hydroxide: Synthesis, Structure, and Reactivity.

In: Journal of the American Chemical Society (J.Am.Chem.Soc.), Jg. 128 (2006) ; Nr. 46, S. 15000-15004
ISSN: 0002-7863
Zeitschriftenaufsatz / Fach: Chemie
Abstract:
Controlled hydrolysis of a (b-diketiminate)calcium-amide gave a heteroleptic (b-diketiminate)calcium-hydroxide complex that is remarkably stable against ligand exchange and formation of Ca(OH)2. The structure of this dimeric complex shows OH- units that sym. bridge the Ca2+ ions. This hydrocarbon-sol. Ca hydroxide reacted rapidly with CO2 to produce a gel from which amorphous CaCO3 slowly sepd. This reaction behavior allows for sol-gel coating with CaCO3 from an org. solvent. Reaction with benzophenone did not lead to nucleophilic attack of OH- to the carbonyl but gave a red benzophenone adduct instead.