A variety of one-, two- and three-dimensional copper(I) and silver(I) co-ordination polymers assembled by 1,4-bis(4-pyridyl)butadiyne and 1,4-bis(2-pyridyl)butadiyne †

Abstract

Four copper(I) and six silver(I) novel co-ordination polymers linked by 1,4-bis(4-pyridyl)butadiyne (4-bpbd) or 1,4-bis(2-pyridyl)butadiyne (2-bpbd) were prepared and seven structures crystallographically characterized, in order to illustrate the structural versatility of co-ordination polymers assembled by the Group 11 metal ions and rod-like nitrogen bidentate ligands with long spacers. Reaction of appropriate copper(I) and silver(I) salts with the 4-bpbd ligand affords 2-D interwoven copper(I) co-ordination polymers {[Cu₂(4-bpbd)₃(CH₃CN)₂]X₂}_n (X = PF₆1a·2H₂O or BF₄1b) and 1-D straight chain silver(I) co-ordination polymers {[Ag(4-bpbd)]X}_n (X = NO₃2a·CH₃CN, ClO₄2b·(CH₃)₂CO or CF₃SO₃2c·(CH₃)₂CO), respectively. On the other hand, reaction of suitable salts with the 2-bpbd ligand provides a 3-D diamondoid copper(I) co-ordination polymer {[Cu(2-bpbd)₂]BF₄}_n3b, a 1-D zigzag chain silver(I) co-ordination polymer {[Ag(2-bpbd)(NO₃)]}_n4a and a 2-D braid sheet silver(I) co-ordination polymer {[Ag(2-bpbd)(CF₃SO₃)]}_n4c, respectively. On the basis of these structural studies, the unique structural features and the dimensionality of the copper(I) and silver(I) co-ordination polymers are revealed.