A two-fold interpenetrating 3D metal-organic framework material constructed from helical chains linked via 4,4′-H2bpz fragments

A 3-connected dia-f-type metal-organic framework compound [Ag(4,4′-bpz)3/2H2PO4] shows unprecedented alternating left- and right-handed helices structure, featuring a non-uniform two-fold interpenetrated (4.142) net.