Abstract
Four new metal–organic frameworks based on transition metals, namely [Mn
2
(μ
2
-H
2
O)
2
(H
2
L)
2
(CH
3
CN)
2
] (
1
), [Mn(L)
0.5
(phen)·0.5H
2
O] (
2
), [Co(H
2
O)
2
(L)
0.5
(bip)·H
2
O] (
3
) and [Co
2
(L)(bb)
2
·HbbBr] (
4
), where (H
4
L = 5,5′-(1,4-phenylenebis(methyleneoxy))diisophthalic acid, bip = 3,5-bis(1-imidazoly)pyridine, phen = 1,10-phenanthroline, bb = 4,4′-bis(imidazolyl)biphenyl), have been successfully synthesized under solvothermal conditions.
1
showed a 2D layer featuring a polythreaded network with alternate left-and right-handed 2
1
helical chains.
2
possessed a 1D [Mn(H
2
L)]
n
chain that was further expanded into a 2D layer through O–H⋯O hydrogen bonds.
3
exhibited a 3D threefold interpenetrating network with a point symbol of (6
4
·8
2
)(6
6
)
2
.
4
had a 3D 3-fold interpenetrated motif with 2-nodal 4,4-c connectivity. The photocatalytic results demonstrated that all of them could exhibit efficient photocatalytic abilities towards the degradation of methyl violet (MV) under UV irradiation. The mechanism of the photocatalytic performance was explored and discussed.