title: Spontaneous resolution through helical association of a Cu-azamacrocyclic complex with Lindqvist-type isopolyanion.
abstract: Anionic metathesis reaction between the perchlorate salt of a copper-tetraazamacrocycle complex and the tetrabutylammonium salt of Lindqvist-type isopolyoxometalates in acetonitrile leads to the formation of two new inorganic-organic hybrid solids formulated as [Cu(L)(MeCN)][W(6)O(19)] (1) and [Cu(L)(MeCN)][Mo(6)O(19)] (2). Interestingly, both ion-pair complexes crystallize in a chiral space group P2(1)2(1)2(1). Crystallographic analysis of the obtained compounds reveals the occurrence of spontaneous resolution during crystallization. Both the enantiomorphs of compound 1 have been structurally characterized, whereas the resolution of compound 2 is rather poor.
authors.affiliation: School of Chemistry, University of Hyderabad, Central University P.O., Hyderabad, 500 046, Andhra Pradesh, India.
authors.forename: Monima
authors.initials: M
authors.lastname: Sarma
authors.forename: Tanmay
authors.initials: T
authors.lastname: Chatterjee
authors.forename: Hanumanthugari
authors.initials: H
authors.lastname: Vindhya
authors.forename: Samar K
authors.initials: SK
authors.lastname: Das