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Silver(I) coordination polymers assembled from flexible cyclotriphosphazene ligand: structures, topologies and investigation of the counteranion effects
Author(s) -
Davarcı Derya,
Gür Rüştü,
Beşli Serap,
Şenkuytu Elif,
Zorlu Yunus
Publication year - 2016
Publication title -
acta crystallographica section b
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.604
H-Index - 33
ISSN - 2052-5206
DOI - 10.1107/s2052520616002663
Subject(s) - ligand (biochemistry) , topology (electrical circuits) , crystallography , tetragonal crystal system , chemistry , net (polyhedron) , network topology , solvent , honeycomb , stereochemistry , crystal structure , materials science , computer science , combinatorics , mathematics , organic chemistry , receptor , geometry , biochemistry , composite material , operating system
The reactions of a flexible ligand hexakis(3‐pyridyloxy)cyclotriphosphazene (HPCP) with a variety of silver(I) salts (Ag X ; X = NO 3 − , PF 6 − , ClO 4 − , CH 3 PhSO 3 − , BF 4 − and CF 3 SO 3 − ) afforded six silver(I) coordination polymers, namely {[Ag 2 (HPCP)]·(NO 3 ) 2 ·H 2 O} n (1), {[Ag 2 (HPCP)(CH 3 CN)]·(PF 6 ) 2 } n (2), {[Ag 2 (HPCP)(CH 3 CN)]·(ClO 4 ) 2 } n (3), [Ag 3 (HPCP)(CH 3 PhSO 3 ) 3 ] n (4), [Ag 2 (HPCP)(CH 3 CN)(BF 4 ) 2 ] n (5) and {[Ag(HPCP)]·(CF 3 SO 3 )} 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 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.