A 2D Layered Metal-Organic Framework Constructed by Using a Hexanuclear Manganese Metallamacrocycle as a Supramolecular Building Block

Abstract

The hexanuclear manganese metallamacrocycle [Mn(6)-(Haahz)(6)(dmso)(6)] (1) was prepared by using a new pentadentate ligand, N-acetylaminobenzhydrazide (H(4)aahz), and a manganese ion as primary building blocks in dimethyl sulfoxide (dmso). Under identical conditions but. in the presence of 1,2-bis(4-pyridyl)ethane (bpea) as an exo-bidentate linker in dimethylformamide (dmf), the 2D layered metal-organic framework (MOF) [Mn(6)(Haahz)(6)(bpea)(2)(dmf)(2)](n) (2) was obtained, where the hexam-1clear manganese metallamacrocycle served as a supramolecular building block. The network topology of 2, a 3-connected 4.8(2) topology, is quite different, from those of the MOFs obtained from a similar pentadentate ligand, N-acylsalicylhydrazide, although the same hexanuclear manganese metallamacrocycles were used as supra-molecular building blocks and bpea was used as the same linker ligand. Although the layers of 2 are staggered relative to each other, the network has quite a large solvent cavity between the layers, because of the corrugated nature of the layer.