Transition metal complexes of poly(vinylpyridines)

Abstract

The structures of the precipitates of free‐radical poly(4‐vinylpyridine) (Vpy), free‐radical poly(2‐Vpy) and isotactic poly(2‐Vpy) with M(II)Cl2 (M = Co, Ni, Cu, Zn) obtained from solution have been investigated. The polymer compounds are similar to the known crystalline monomeric Vpy complexes and, with one exception, are crosslinked by the metal dichloride. Co(II) and Zn(II) are tetrahedrally coordinated by the polymer, while the Ni(II) and Cu(II) complexes are probably tetrahedral and square‐planar, respectively. Because of the constraints of the polymeric ligands the stoichiometries of the complexes are not exactly the same as those of the monomeric Vpy complexes and from one to two Vpy units per metal halide are on average not coordinated. Atactic and isotactic poly(2‐Vpy) showed marked differences with regard to coordination of Ni(II). The questions of stereochemistry of the coordinated metal ion, stoichiometry of the complexes, intermolecular versus intramolecular complexation of the polymer chain, and the influence of polymer tacticity on the crystallizability of polymer complexes are discussed.

Poly(4-vinylpyridine) as ligand for Au(I) and Zn(II) cations: luminescent metal-containing polymers

“…It is soluble in polar solvents and cheap. Examples for metals which have been used are Ru, Co, Ni, Zn, Cu, Os, Fe, Sn, Al, Cr, Mn, Mo, Pd, Hg, W, Ti, and rare earth metals [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25]. Interestingly, to our knowledge there is only one publication on a goldcontaining P4VP up to now.…”

Thermal Properties, Interactions, Morphologies, and Conductivity Behavior in Blends of Poly(vinylpyridine)s and Zinc Perchlorate

“…6 Furthermore, many reports have appeared describing ionomers formed using P2VP and P4VP. [7][8][9][10][11][12][13][14] The zinc perchlorate employed in this study was coordinated to either P2VP or P4VP by blending in solution. According to the hard/soft and acid/base concepts, 15 the water of hydration can be considered a hard base, the zinc cation a borderline acid, and the pyridine ligand a borderline base.…”

A Novel Fibrous Material Created by Self‐Rolling of a Patterned Polymer Thin Film

“…After a few moments, the fibers became much more rigid, which is evident from the character of their floating in the solution. The rigidity of the polymer is increased due to the formation of complexes of the pyridine units with the Cu(II) ions 25–28. The use of ethanol as a co‐solvent for the salt and the polymer produced better results than simply adding the salt into the suspension of the fibers in acidic water.…”