Structural diversity and luminescent sensing of three coordination polymers based on the hydrolysates of N,N′-bis(3,5-dicarboxylatophenyl)pyromelliticdi-imide)

Based on the hydrolysates of N,N'-bis(3,5-dicarboxylatophenyl)pyromelliticdi-imide) (H4L) and 1,3-bis(imidazol-1-ylmethyl)benzene (bimb), three coordination polymers, namely, {[Zn(BTC)(0.5)(bimb)]center dot 4H(2)O)(n) (1), [Cu(BTC)(0.5)(bimb)](n) (2), and {[Cd(AIP)(H2O)]center dot H2O)(n) (3), have been obtained under solvothermal conditions. The possible hydrolysis mechanism of H4L. was investigated here. Structural analyses reveal that complex I is a 3D (4,4)-c {6(4).8(2)}{6(6)}(2)-bbf net. Complex 2 displays a 2D 4-c {3(2).6(2).7(2)}-kgm sheet. While complex 3 exhibits a 3D (3,6)-c {4.6(2)}(2)[4(2).6(10).8(3)}-rtl net based on binuclear {Cd-2(COO)(4)) SBUs. Besides, luminescent sensing investigation indicated that 1 and 3 exhibit highly sensitive and selective sensing of chromate anions in aqueous solution. (C) 2018 Elsevier B.V. All rights reserved.