A 3-D metal–organic framework constructed from the linear trimetallic [Cd2NaO6(H2O)6] secondary building units (SBUs) and a long flexible 6,6’-dithiodinicotinate tecton is presented, which has a 6-connected (46.69)-hxg network with high-symmetry hexagonal geometries.
![Graphical abstract: A structural paradigm for 3-periodic semiregular (46.69)-hxg net with high-symmetry hexagonal geometry, constructed from the linear [Cd2NaO6(H2O)6] SBUs and a flexible 6,6’-dithiodinicotinate linker](http://hg.y866.cn/compound/lib/scimg/usr/1/C2CC31905E.jpg)