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Two new borates, NaK1.5[B{B5O9(OH)}{B5O8(OH)2}1/2] (1) and Na3.5[Al{B3O6(OH)}{B5O10}1/2{BO(OH)}] (2), have been made by a solvothermal method. Structure 1 is made of two types of oxoboron clusters ([B5O9(OH)]4− and [B5O8(OH)2]3−) and BO4 tetrahedra to form a 3D porous layer, in which the [B5O9(OH)]4− clusters are bridged by BO4 groups to produce a 2D B–O layer with 11-membered ring (MR) windows, while the [B5O8(OH)2]3− clusters as 2-connected pillars join the adjacent B–O layers to make a 3-D porous layer. Structure 2 is built from two types of oxoboron clusters ([B3O6(OH)]4− and [B5O12]9−), AlO4 units and BO2(OH) triangles to produce 3D pillar-layered aluminoborate (ABO), in which the [B5O12]9− clusters are linked together to form a 2-D B–O layer; the [B3O6(OH)]4− clusters and AlO4 groups join each other to form 1D tubular ABO; and the BO2(OH) triangles act as linkers to connect the adjacent B–O layer and the ABO tubes, resulting in 3D pillar-layered ABO. Interestingly, the ABO tubes decorated with the BO2(OH) triangles act as pillars to make a 3D layer-pillared structure. UV-vis diffuse spectra indicate that both have cut-off edges below 190 nm, and the calculated band gaps are 5.75 and 5.78 eV, respectively. [ABSTRACT FROM AUTHOR]

In the title compound, [Mn(C8H7O2)2(C12H9N3)], the manganese(II) centre is surrounded by three bidentate chelating ligands, namely, one 2-(2-pyridyl)benzimidazole ligand [Mn-N = 2.1954 (13) and 2.2595 (14) A] and two p-toluate ligands [Mn-O = 2.1559 (13)-2.2748 (14) A]. It displays a severely distorted octahedral geometry, with cis angles ranging from 58.87 (4) to 106.49 (5) degrees. Intermolecular C-H...O hydrogen bonds between the p-toluate ligands link the molecules into infinite chains, and every two neighbouring chains are further coupled by N-H...O and C-H...O hydrogen bonds between the 2-(2-pyridyl)benzimidazole and p-toluate ligands, leading to an infinite ribbon-like double-chain packing mode. The complete solid-state structure can be described as a three-dimensional supramolecular framework, stabilized by these intermolecular hydrogen-bonding interactions and possible C-H...pi interactions, as well as stacking interactions involving the 2-(2-pyridyl)benzimidazole ligands.

In the title compound, [Mn(C(7)H(3)NO(4))(C(3)H(4)N(2))(C(12)H(8)N(2))(H(2)O)], the Mn(II) centre is surrounded by one bidentate phenanthroline ligand [Mn-N = 2.383 (3) and 2.421 (3) A], one tridentate dipicolinate ligand [Mn-N = 2.300 (3) A, and Mn-O = 2.300 (2) and 2.357 (2) A], one monodentate imidazole ligand [Mn-N = 2.238 (3) A] and one water molecule [Mn-O = 2.157 (3) A]. It displays a distorted pentagonal-bipyramidal geometry, with neighbouring angles within the equatorial plane ranging from 68.05 (9) to 77.48 (10) degrees . Intermolecular O-H...O hydrogen bonds link the molecules into infinite chains. The chains are crosslinked by hydrogen bonds involving the carboxyl O atoms of the dipicolinate ligand and the protonated imidazole N atom, leading to an infinite two-dimensional network sheet packing mode. The complete solid-state structure can be described as a three-dimensional supramolecular framework, stabilized by these intermolecular hydrogen-bonding interactions and pi-pi stacking interactions involving the phenanthroline rings.

The polymeric title complex, [[Mn(C(4)H(4)O(4))(C(10)H(8)N(2))(H(2)O)].0.5C(10)H(8)N(2)](n), possesses a three-dimensional open-framework structure, with the solvate 4,4'-bipyridine (bipy) molecules, which lie around centers of inversion, clathrated in the channels of the framework. The Mn(II) center is surrounded by three succinate (succ) ligands, one water molecule and two bipy ligands, and displays a slightly distorted octahedral coordination environment, with cis angles ranging from 84.14 (12) to 96.56 (11) degrees. Each succ dianion coordinates to three Mn(II) atoms, thus acting as a bridging tridentate ligand; in turn, the Mn(II) atoms are bridged by three succ ligands, thus forming a two-dimensional Mn-succ sheet pillared by the bridging bipy ligands. Two hydrogen-bonding interactions, involving the water molecules and the carboxy O atoms of the succ ligands, are present in the crystal structure.

The title complex, [Mn(C(8)H(4)O(4))(C(10)H(8)N(2))(H(2)O)](n), takes the form of a zigzag chain, with the terephthalate dianion (tp) acting as a tridentate ligand. The Mn(II) center is surrounded by two tp ligands, one water molecule and one 2,2'-bipyridine (bipy) ligand and exhibits a severely distorted octahedral coordination environment, with cis angles ranging from 57.31 (8) to 123.97 (11) degrees. The complete solid-state structure can be described as a three-dimensional supramolecular framework stabilized by hydrogen-bonding interactions involving the coordinated water molecule and the carboxy O atoms of the tp ligands, and by pi-pi stacking interactions involving the bipy rings and the benzene ring of the tp ligand.