catena-Poly[bis(O,O'-diethyldithiophosphato-S)zinc(II)-μ-4,4'-bipyridyl-N:N']

Crystal structure of a low-temperature (100 K) polymorph of catena-poly[(μ2-4,4′-bipyridine-κ2 N,N′)-bis(O,O′-diethyldithiophosphato-κ1 S)zinc(II)], C18H28N2O4P2S4Zn

“…Such steric control over supramolecular association in the zinc-triad dithiophosphate adducts of bipyridyl-type molecules is well established [6,[10][11][12]. In continuation of studies in this area, a low temperature (100 K) form of {Zn[S 2 P(OEt) 2 ] 2 (4,4′bipy)}n, (I), was characterised crystallographically and compared with the previously reported room-temperature form [8].…”

“…The neutral, usually bidentate bridging ligand, 4,4′bipyridine (4,4′-bipy), has proven to be a mainstay in coordination chemistry for the construction of coordination polymers, up to and including three-dimensional metalorganic framework architectures. [8] and iPr [9]. However, when the R group is bulky, such as when R = cyclohexyl (Cy), only zero-dimensional, binuclear molecules could be isolated, i.e.…”

Crystal structure of catena-poly[(μ2-4,4′-bipyridyl-κN,N′)-bis(O,O′-dimethyldithiophosphato-κS)-zinc(II)], {C14H20N2O4P2S4Zn}n

“…Thus, for each of {Zn[S 2 P(OR) 2 ] 2 (4,4′-bipyridine)}n, i.e. R = Et [9] and R = iPr [10], zig-zag chains are observed as for the title structure. To a first approximation the pitch of each polymer is about the same, being 16.8 Å in the structure reported here, 16.4−17.5 Å for the R = Et species (for which there are two independent zinc atoms) and 15.9−16.1 Å for the R = iPr species (three independent zinc atoms).…”

Perplexing Coordination Behaviour of Potentially Bridging Bipyridyl-Type Ligands in the Coordination Chemistry of Zinc and Cadmium 1,1-Dithiolate Compounds

“…In {Zn[S 2 P(OEt) 2 ] 2 (bpy)} n (8) [33], two independent formula units comprise the asymmetric unit. One of the independent zinc atoms is coordinated within a distorted tetrahedral N 2 S 2 donor set; both dithiophosphate ligands coordinate in the monodentate mode.…”

“…As seen from Figure 4d, the ethene link between the 4-pyridyl rings introduces more space between adjacent zinc centres which readily accommodates the large cyclohexyl rings and thereby, enables the formation of a polymeric chain. [33], two independent formula units comprise the asymmetric unit. One of the independent zinc atoms is coordinated within a distorted tetrahedral N2S2 donor set; both dithiophosphate ligands coordinate in the monodentate mode.…”