The nitrogen isotherm measured on supercritically dried DUT-76(Cu) powder shows type Ib isotherm (Figure ) with three distinct steps before reaching a plateau at about 79.9 mmol•g -1 (at p/p0 = 0.4). The steps in the isotherm are obviously related to the filling of three different cages (Figure ), available in the crystal structure of the MOF: 1) the cuboctahedral pore with 12 Å in diameter; 2) the truncated octahedral pore with 21 Å in diameter; 3) cubic pore of 27 Å in diameter. The total pore volume (TPV) in saturation reaches 2.77 cm 3 •g -1 which is in agreement with the calculated total geometric volume of 2.76 cm 3 •g -1 for this structure (see Figure ). SEM images of DUT-76(Cu) were obtained indicating octahedral and cuboctahedral crystal shape (see Figure ) and the PXRD patterns of the as made as well as the desolvated MOF were measured (see Figure ) both fit with the simulated pattern generated from the originally reported structure. The TGA graph shows a small step of 1.86 % at 373 K due to moisture taken up while transferring the sample from a glovebox to the thermal analyser and then from T = 533 -638 K a strong mass loss is observed due to degradation of the linker leaving 20.9% of the initial mass as copper(II) oxide which is in agreement with the 21.9% calculated for this material.