Modulating the hydration behaviour of calcium chloride by lactam complexation. Issue 30 (13th July 2016)

• Record Type: Journal Article
• Authors: Perrin, Andrea; Musa, Osama M.; Steed, Jonathan W.
• Is Part Of: Dalton transactions. Volume 45:Issue 30(2016)
• Page Start: 12181
• Page End: 12187
• Publication Date: 2016-07-13
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c6dt02296k
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : A bis(lactam) ligand has been used to modulate the hydration of calcium chloride giving rise to and anhydrous and two hydrated forms of Ca(L1 )Cl2 paving the way for their use in accelerated cement drying. Abstract : Complexation of calcium chloride with bis(lactam) ligandL1 allows the formation of both an unstable anhydrous complex, an aqua complex {[Ca2 (μ-L1 )2 (H2 O)9 ]Cl4 ]} n (1 ) and a related hydrate incorporating additional lattice water of crystallization {[Ca(μ-L1 )(H2 O)5 ]Cl2 ·H2 O} n (2 ). Related mono(lactam)L2 does not form aqua complexes but the anhydrous complex {[CaCl2 (μ-L2 )2 ]} n (3 ), is highly deliquescent. An unusual ethanol solvate is also reported {[CaCl2 (L2 )(EtOH)]} n (4 ).