An X-ray diffraction study of anion and ratio dependence in the formation of discrete molecules versus polymeric arrays involving silver salts and bipyridine ligands

Birds and small urban parks: a study in a high plateau city

“…50,51 Because the inter-ring C-C bond of bipy can rotate freely, bipy cannot just be considered as a chelating ligand 52,53 , but also a potential spacer between metal centers by acting as a bridging ligand with an anti configuration to form stable polymeric complexes. 54 In addition, bipy ligand is capable of giving very stable species in solution 55,56 due to π -back bonding from metal to the aromatic amine and also π -aromatic systems are stabilized by stacking due to non-covalent interactions involving the π systems in solid state. 57 The molecular geometry of the title compound is illustrated in Figure 1 and crystal data listed in Table 1 because of the constraint geometry of the bipy ring system.…”

cis-Dichloridobis(5,5′-dimethyl-2,2′-bipyridine)manganese(II) 2.5-hydrate

“…For the structures and applications of bipyridine and analogous ligands, see: Hazell (2004); Bakir et al (1992); Cordes et al (1982); Hung-Low et al (2009). For the structure and applications of 5,5 0 -dimethyl-2,2 0 -dipyridine, see: Marandi et al (2009); van Albada et al (2005).…”

“…Bipyridine and analogous ligands are commonly used in the formation of different complexes with a general variety of transition metals (Hazell, 2004;Bakir et al, 1992;Cordes et al,1982;Hung-Low et al,2009;). The ligand 5,5′-Dimethyl-2,2′-dipyridine (abbreviated as dmdpy) acts as a chelator and usually gives rise to monomeric compounds (Marandi et al, 2009).…”

Ammine(2,2′-bipyridine-κ2N,N′)silver(I) nitrate: a dimer formed by π–π stacking and ligand-unsupported Ag...Ag interactions

“…Because the central C-C bond of bipyridine (bipy) can rotate freely, bipy cannot just be regarded as a chelating ligand (Kaes et al, 2000;, but also as a potential spacer between metal centers by acting as a bridging ligand with an anti configuration (Yu et al, 2007;Fornié s et al, 1993). Therefore, bipy and its derivatives are widely used in the construction of novel Ag Icontaining complexes incorporating diverse supramolecular interactions (Hung-Low et al, 2009;Ye et al, 2005). Recently, we have pursued systematic investigations into the assembly of Ag I cations with different angular and linear bipodal Ndonor ligands, such as aminopyrimidine and aminopyrazine (e.g.…”