2018
DOI: 10.1039/c8dt00640g
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Silver(i) complexes of bis- and tris-(pyrazolyl)azine derivatives – dimers, coordination polymers and a pentametallic assembly

Abstract: Silver(i) complexes of 2,4,6-tri(pyrazol-1-yl)pyridine (tpp), 2,4,6-tri(pyrazol-1-yl)pyrimidine (tpym), 2,4,6-tri(pyrazol-1-yl)-1,3,5-triazine (tpt) and 2,4-di(pyrazol-1-yl)-1,3,5-triazine (bpt) are reported. Dinuclear [Ag2(μ-tpp)2(MeCN)2][BF4]2·2MeCN and [Ag2(μ-tpym)2(MeCN)2][BF4]2 are formed from approximately planar [AgL(NCMe)]+ (L = tpp or bpym) centres, which dimerise via apical interactions to the pendant pyrazolyl donor on each ligand. Two polymeric solvatomorph phases [Ag2(μ-tpp)2][BF4]2·nMeNO2 were ob… Show more

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Cited by 17 publications
(31 citation statements)
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“…Ligands L 1 and L 5 -L 7 were prepared by the literature syntheses. 14,20,25 The new ligands L 2 -L 4 were obtained by analogous procedures to that for L 1 , by treating 2,4-dichloro-1,3,5-triazine with 2 equiv of the appropriate pyrazole in tetrahydrofuran, in the presence of sodium hydride base. Moderate yields of 41-62 % of NMR-pure products were obtained, after purification by chromatography if required.…”
Section: Resultsmentioning
confidence: 99%
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“…Ligands L 1 and L 5 -L 7 were prepared by the literature syntheses. 14,20,25 The new ligands L 2 -L 4 were obtained by analogous procedures to that for L 1 , by treating 2,4-dichloro-1,3,5-triazine with 2 equiv of the appropriate pyrazole in tetrahydrofuran, in the presence of sodium hydride base. Moderate yields of 41-62 % of NMR-pure products were obtained, after purification by chromatography if required.…”
Section: Resultsmentioning
confidence: 99%
“…The only previously reported complex of L 1 is [Ag(-L 1 )]BF 4 , a 1D coordination polymer. 14 29 while the additional ligand in the acetonitrile adduct gives that a distorted octahedral structure ( Figure 2). That geometry change leads to a concertina-like contraction of the polymer chain, as evidenced by the dihedral angle between the bridging ligands at each silver vertex ( ), which is 107.22(4)°for [Ag(-L 2 )]ClO 4 , and 77.04(4)°for [Ag(NCMe)(-L 2 )]ClO 4 .…”
Section: Figure 1 Two Views Of the {[Bfmentioning
confidence: 99%
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