Significance: Antiferromagnets can host strong quantum fluctuations in their ground state if they combine both low dimensionality and low spin. Materials based on copper oxides (spin-1/2 ions in layered or 1D structures) are unique in optimizing the tendency to strong quantum fluctuations. As a bonus, they show extremely large magnetic interactions, which lead to interesting quantum effects at relatively high temperatures as anomalous transport properties and high- T c superconductivity in doped systems. Obtaining similar features with other ions has been a long-standing goal. We show that silver and fluorine (which are next to copper and oxygen in the periodic table) in the commercial compound A g F 2 reach the goal, paving the way for a different generation of quantum materials.

AgF ₂ compressed to 150 000 atm forms a unique polymorphic form consisting of the first metal fluoride nanotubes.

Ag(ii)SO₄ – a powerful oxidizer – allows for single-pot oxidative aromatic coupling of naphthalene and its 1- and 2-substituted derivatives.