title: Silver(I) coordination polymers assembled from flexible cyclotriphosphazene ligand: structures, topologies and investigation of the counteranion effects.
abstract: The reactions of a flexible ligand hexakis(3-pyridyloxy)cyclotriphosphazene (HPCP) with a variety of silver(I) salts (AgX; X = NO3(-), PF6(-), ClO4(-), CH3PhSO3(-), BF4(-) and CF3SO3(-)) afforded six silver(I) coordination polymers, namely {[Ag2(HPCP)]·(NO3)2·H2O}n (1), {[Ag2(HPCP)(CH3CN)]·(PF6)2}n (2), {[Ag2(HPCP)(CH3CN)]·(ClO4)2}n (3), [Ag3(HPCP)(CH3PhSO3)3]n (4), [Ag2(HPCP)(CH3CN)(BF4)2]n (5) and {[Ag(HPCP)]·(CF3SO3)}n (6). All of the isolated crystalline compounds were structurally determined by X-ray crystallography. Changing the counteranions in the reactions, which were conducted under similar conditions of M/L ratio (1:1), temperature and solvent, resulted in structures with different types of topologies. In complexes (1)-(6), the ligand HPCP shows different coordination modes with Ag(I) ions giving two-dimensional layered structures and three-dimensional frameworks with different topologies. Complex (1) displays a new three-dimensional framework adopting a (3,3,6)-connected 3-nodal net with point symbol {4.6(2)}2{4(2).6(10).8(3)}. Complexes (2) and (3) are isomorphous and have a two-dimensional layered structure showing the same 3,6L60 topology with point symbol {4.2(6)}2{4(8).6(6).8}. Complex (4) is a two-dimensional structure incorporating short Ag...Ag argentophilic interactions and has a uninodal 4-connected sql/Shubnikov tetragonal plane net with {4(4).6(2)} topology. Complex (5) exhibits a novel three-dimensional framework and more suprisingly contains twofold interpenetrated honeycomb-like networks, in which the single net has a trinodal (2,3,5)-connected 3-nodal net with point symbol {6(3).8(6).12}{6(3)}{8}. Complex (6) crystallizes in a trigonal crystal system with the space group R\bar 3 and possesses a three-dimensional polymeric structure showing a binodal (4,6)-connected fsh net with the point symbol (4(3).6(3))2.(4(6).6(6).8(3)). The effect of the counteranions on the formation of coordination polymers is discussed in this study.
authors.affiliation: Department of Chemistry, Gebze Technical University, PO Box 141, Gebze, 41400 Kocaeli, Turkey.
authors.forename: Derya
authors.initials: D
authors.lastname: Davarcı
authors.affiliation: Department of Chemistry, Gebze Technical University, PO Box 141, Gebze, 41400 Kocaeli, Turkey.
authors.forename: Rüştü
authors.initials: R
authors.lastname: Gür
authors.affiliation: Department of Chemistry, Gebze Technical University, PO Box 141, Gebze, 41400 Kocaeli, Turkey.
authors.forename: Serap
authors.initials: S
authors.lastname: Beşli
authors.affiliation: Department of Chemistry, Gebze Technical University, PO Box 141, Gebze, 41400 Kocaeli, Turkey.
authors.forename: Elif
authors.initials: E
authors.lastname: Şenkuytu
authors.affiliation: Department of Chemistry, Gebze Technical University, PO Box 141, Gebze, 41400 Kocaeli, Turkey.
authors.forename: Yunus
authors.initials: Y
authors.lastname: Zorlu
mesh_terms: D000838:Anions / Q000737:chemistry; D056831:Coordination Complexes / Q000737:chemistry*; D018360:Crystallography, X-Ray; D008024:Ligands; D008958:Models, Molecular; D009943:Organophosphorus Compounds / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D012834:Silver / Q000737:chemistry*
chemical_list: D000838:Anions; D056831:Coordination Complexes; D008024:Ligands; D009943:Organophosphorus Compounds; D011108:Polymers; C074235:cyclophosphazene monomer; D012834:Silver
keywords: counteranion; cyclotriphosphazene; silver(I) coordination polymers; topological representations