2D Cationic Metal-Organic Frameworks of Ag+ with Mixed Ligands (Semi-Rigid Dipyridyl, 3-pmpmd, and Diphosphine, dppe)

AbstractWith the complex 1 or 2 ([Ag(3-pmpmd)] n ·n(X) (X − = BF 4 − , 1; X = PF 6 − , 2) from the semi-rigid 3-pmpmd (N,N′-bis(3-pyridylmethyl)-pyromellitic diimide) ligand and AgBF 4 or AgPF 6 as the precursor, two new coordination polymers [Ag 2 (3-pmpmd) 2 (dppe)(BF 4 ) 2 ] n ·4nDMF (3) and [Ag 2 (3-pmpmd) 2 (dppe)(PF 6 ) 2 ] n ·4nDMF (4) with the 2D cationic MOFs (metal-organic frameworks), have been obtained in the presence of the second dppe (Ph 2 P(CH 2 ) 2 PPh 2 ) ligand. In the 2D layer network, the 3-pmpmd ligands show the Z T -mode and the Z C -mode conformations, and the bridged dppe ligands have the same anti conformation. In the meantime, the functions of the two selected ligands, together with the supramolecular interactions from counter ions and solvates molecules within, should play a key role in the construction of the 2D noninterpenetrated network.Graphical AbstractTwo new coordination polymers [Ag 2 (3-pmpmd) 2 (dppe)(BF 4 ) 2 ] n ·4nDMF (3) and [Ag 2 (3-pmpmd) 2 (dppe)(PF 6 ) 2 ] n ·4nDMF (4) with the 2D cationic MOFs, have been obtained from the precursor (complex 1 or 2) of the semi-regid 3-pmpmd ligand and AgBF 4 or AgPF 6 in the presence of the second dppe ligand. In the 2D layer network, the characteristic conformations of the ligands (the 3-pmpmd ligands in the Z T -mode and the Z C -mode, and the bridged dppe ligands in the anti conformation), the functions of the two selected ligands, together with the existence of different counterions and solvates molecules within, should play the key role in the construction of the 2D noninterpenetrated network.[IMAGE]