A one-dimensional polymeric cobalt(III)-potassium complex with 18-crown-6, cyanide and porphyrinate ligands.

ABSTRACT: The reaction of Co(II)(TpivPP) {TpivPP is the dianion of 5,10,15,20-tetra-kis-[2-(2,2-di-methyl-propanamido)-phen-yl]por-ph-yrin} with an excess of KCN salts and an excess of the 18-crown-6 in chloro-benzene leads to the polymeric title compound catena-poly[[dicyanido-2?(2) C-(1,4,7,10,13,16-hexa-oxa-cyclo-octa-decane-1?(6) O){?3-(2?,2?)-5,10,15,20-tetra-kis-[2-(2,2-di-methyl-propanamido)-phen-yl]porphyrinato-1?O (5):2?(4) N,N',N'',N''':1'?O (15)}cobalt(III)potassium] dihydrate], {[CoK(CN)2(C12H24O6)(C64H64N8O4]·2H2O} n . The Co(III) ion lies on an inversion center, and the asymmetric unit contains one half of a [Co(III)(2?,2?-TpivPP)(CN)2](-) ion complex and one half of a [K(18-C-6](+) counter-ion (18-C-6 is 1,4,7,10,13,16-hexa-oxa-cyclo-octa-deca-ne), where the K(I) ion lies on an inversion center. The Co(III) ion is hexa-coordinated by two C-bonded axial cyanide ligands and the four pyrrole N atoms of the porphyrin ligand. The K(I) ion is chelated by the six O atoms of the 18-crown-6 mol-ecule and is further coordinated by two O atoms of pivalamido groups of the porphyrin ligands, leading to the formation of polymeric chains running along [011]. In the crystal, the polymeric chains and the lattice water mol-ecules are linked by N-H?O and O-H?N hydrogen bonds, as well as weak C-H?O, O-H?? and C-H?? inter-actions into a three-dimensional supra-molecular architecture.

SUBMITTER: Belghith Y 

PROVIDER: S-EPMC3998383 | biostudies-literature | 2014 Mar

REPOSITORIES: biostudies-literature