An unprecedented six-fold anion-type chiral diamondoid-like eight-coordinate Cd(II) coordination polymer with a second-order nonlinear optical effect

The reaction of Cd(OH)2 with 3,3′-azodibenzoic acid affords an unprecedented anionic chiral diamondoid network, bis(3,3′-azodibenzoate)cadmium·(H2NMe2)·(NH4) which contains eight-coordinate cadmium and displays strong SHG response and enantioselectivity for organic amines.