Porous Cu-Cd mixed-metal-organic frameworks constructed from Cu(PyaC)2 {Bis[3-(4-pyridyl)pentane-2,4-dionato]copper(II)}

Porous Cu-Cd mixed-metal-organic frameworks [{Cd(NO3)(2)}(2)-{(Cu(Pyac)(2)}(3)] (M'MOF 1) and [{CdCl2}{Cu(Pyac)(2)}(2)] (M'MOF 2) {Cu(Pyac)(2) = bis[3-(4-pyridyl)pentane-2,4-dionato]copper(II)} have been synthesized by the reaction of Cu(Pyac)(2) with Cd(NO3)(2) and CdCl2. They are noninterpenetrating 1D ladder and 2D square-grid frameworks, constructed from Cu(Pyac)(2) building blocks with T-shaped Cd(NO3)(2) nodes and square-planar CdCl2 nodes, respectively. The 1D ladders and 2D square grids are stacked in ABCABC... and ABCDEF... packings, leading to 2D interconnected channels of ca. 5.7 x 10.2 and 4.1 x 9.8 Angstrom in 1 and 1 D channels of ca. 8.0 x 8.2 Angstrom in 2, respectively. The copper sites in these two M'MOFs are coordinated by solvent molecules and exposed to the pores.