Two zinc coordination polymers showing five-fold interpenetrated diamondoid network and 2D → 3D inclined polycatenation motif

The reaction of Zn(NO3)2, 1,4-bis(1,2,4-triazol-4-yl)benzene (btx), 1,4-benzenedicarboxylicate (1,4-bdc) or fumarate (fum) gives two unusual coordination polymers {[Zn(btx)(1,4-bdc)] 3H2O}n (1) and [Zn(btx)0.5(fum)(H2O)]n (2). 1 shows a 5-fold interpenetrated three-dimensional diamondoid network. 2 displays a 2D → 3D inclined polycatenation motif consisting of two sets of equivalent 2D (6,3) layers. The luminescence and thermal stability were investigated.