In the structure of the title salt, {(C5H14N3)[CdCl3]} n , the Cd(II) atom of the complex anion is five-coordinated by one terminal and four bridging Cl atoms. The corresponding coordination polyhedron is a distorted trigonal bipyramid, with Cd-Cl distances in the range 2.4829 (4)-2.6402 (4) Å. The bipyramids are condensed into a polyanionic zigzag chain extending parallel to [101]. The tetra-m...

An efficient Knoevenegel reaction, addition of Michael, trans-esterification for the synthesis of new polyanionic acyclonucleosids using natural phosphate as catalyst

We describe a new supramolecular approach combining host-guest and electrostatic interactions to design hybrid materials containing polyanionic bulky inorganic compounds and showing liquid crystalline properties.

Two new silver vanadate arsenates, Ag2VAsO6 and Ag6V2As2O13, have been prepared applying high oxygen pressure syntheses in stainless-steel autoclaves. Ag2VAsO6 crystallizes in space group P1̄ with unit cell parameters a = 639.1(1), b = 646.1(1), c = 706.6(1) pm, α = 116.105(3), β = 91.759(4), γ = 90.067(4)◦, and Z = 2 (R1 = 0.058, 3935 independent reflections). The structure consists of AsO4 tet...

The paper reviews the polyanionic hexagons of silicon and germanium, focusing on aromaticity. The chair-like structures of hexasilaand hexagermabenzene are similar to a nonaromatic cyclohexane (CH2)6 and dissimilar to aromatic D6h-symmetric benzene (CH)6, although silicon and germanium are in the same group of the periodic table as carbon. Recently, six-membered silicon and germanium rings with...

Polyanionic macromolecules are extremely abundant both in the extracellular environment and inside the cell, where they are readily accessible to many proteins for interactions that play a variety of biological roles. Among polyanions, heparin, heparan sulfate proteoglycans (HSPGs) and glycosphingolipids (GSLs) are widely distributed in biological fluids, at the cell membrane and inside the cel...