Benzene carboxylate-bridged frameworks

Two-dimensional networks have been formed by four square carboxylate-bridged di-metal(II) building units using the reaction of Zn(N03)2 or Cu(N03)2 with benzene-1,3-dicarboxylate in methanol or DMF in the presence of pyridine [125], Hydrothermal treatment of Ni(N03)2 with disodium fumarate in water at 170 °C leads to a complex [Ni2(fumarate)2-H20] with a three-dimensional polymeric structure formed by chains of fused Ni(II) octahedral units [126]. Nickel succinate presents a remarkable three-dimensional Ni-O-Ni framework with porosity and high thermal stability (-400 °C) [127]. A two-dimensional... 

Kaskel and coworkers carried out similar cyanosilylation reactions with coor-dinatively unsaturated metal coimecting points in 3D MOFs as heterogeneous catalysts [20]. The 3D framework [Cu3(BTC)2(H20)3] (2) (BTC benzene-1,3,5-tricarboxylate) used in this study was first reported by Williams et al. [21]. The open framework of 2 is built from dimeric cupric tetra-carboxylate units (paddle-wheels) with aqua molecules coordinating to the axial positions and BTC bridging... 

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