Self-Assembly of 1D Double-Chain and 3D Diamondoid Networks of Lanthanide Coordination Polymers through In Situ-Generated Ligands: High-Pressure CO2 Adsorption and Photoluminescence Properties.

Two new lanthanide-based coordination polymers, [Sm2(bzz)(ben)6(H2O)3]·0.5H2O (1) and [Eu(bbz)(ben)3] (2), were synthesized and characterized. The described products were formed from in situ-generated benzoate (ben) and N'-benzoylbenzohydrazide (bbz) ligands, which were the products of transformation of originally added benzhydrazide (bzz) under hydrothermal conditions. Compound 1 exhibits a one-dimensional (1D) double-chain structure built up from the connection of the central Sm3+ ions with a mixture of bzz and ben ligands. On the other hand, 2 features a 3D network with a 4-connected (66) dia topology constructed from dinuclear [Eu2(ben)6] secondary building units and bbz linkers. High-pressure CO2 sorption studies of activated 1 show that maximum uptake increases to exceptionally high values of 376.7 cm3 g-1 (42.5 wt%) under a pressure of 50 bar at 298 K with good recyclability. Meanwhile, 2 shows a typical red emission in the solid state at room temperature with the decay lifetime of 1.2 ms.

Crystal structures of tetra-methyl-ammonium (2,2'-bi-pyridine)-tetra-cyanidoferrate(III) trihydrate and poly[[(2,2'-bi-pyridine-κ(2) N,N')di-µ2-cyanido-dicyanido(µ-ethyl-enedi-amine)(ethyl-enedi-amine-κ(2) N,N')-cadmium(II)iron(II)] monohydrate].

The crystal structures of the building block tetra-methyl-ammonium (2,2'-bi-pyridine-κ(2) N,N')tetra-cyanidoferrate(III) trihydrate, [N(CH3)4][Fe(CN)4(C10H8N2)]·3H2O, (I), and a new two-dimensional cyanide-bridged bimetallic coordination polymer, poly[[(2,2'-bi-pyridine-κ(2) N,N')di-µ2-cyanido-dicyanido(µ-ethyl-enedi-amine-κ(2) N:N')(ethyl-enedi-amine-κ(2) N,N')cadmium(II)iron(II)] monohydrate], [CdFe(CN)4(C10H8N2)(C2H8N2)2]·H2O, (II), are reported. In the crystal of (I), pairs of [Fe(2,2'-bipy)(CN)4](-) units (2,2'-bipy is 2,2'-bi-pyri-dine) are linked together through π-π stacking between the pyridyl rings of the 2,2'-bipy ligands to form a graphite-like structure parallel to the ab plane. The three independent water mol-ecules are hydrogen-bonded alternately with each other, forming a ladder chain structure with R 4 (4)(8) and R 6 (6)(12) graph-set ring motifs, while the disordered [N(CH3)4](+) cations lie above and below the water chains, and the packing is stabilized by weak C-H⋯O hydrogen bonds. The water chains are further linked with adjacent sheets into a three-dimensional network via O-H⋯O hydrogen bonds involving the lattice water mol-ecules and the N atoms of terminal cyanide groups of the [Fe(2,2'-bipy)(CN)4](-) building blocks, forming an R 4 (4)(12) ring motif. Compound (II) features a two-dimensional {[Fe(2,2'-bipy)(CN)4Cd(en)2]} n layer structure (en is ethyl-enedi-amine) extending parallel to (010) and constructed from {[Fe(2,2'-bipy)(CN)4Cd(en)]} n chains inter-linked by bridging en ligands at the Cd atoms. Classical O-H⋯N and N-H⋯O hydrogen bonds involving the lattice water mol-ecule and N atoms of terminal cyanide groups and the N-H groups of the en ligands are observed within the layers. The layers are further connected via π-π stacking inter-actions between adjacent pyridine rings of the 2,2'-bipy ligands, completing a three-dimensional supra-molecular structure.

Crystal structure of (pyridin-2-yl-methyl-idene)(tri-phenyl-meth-yl)amine.

The title Schiff base compound, C25H20N2, crystallizes with two independent mol-ecules (A and B) in the asymmetric unit. In both mol-ecules, the imine group is approximately coplanar with the pyridine ring, with N-C-C-N torsion angles of 170.1 (3) and -172.0 (3) Å. In the crystal, A and B dimers are linked by pairs of C-H⋯π inter-actions and further C-H⋯π bonds link the dimers into a three-dimensional network.

trans-Bis(nitrato-κO)bis-(1,10-phenanthroline-κ(2)N,N')manganese(II).

In the title compound, [Mn(NO(3))(2)(C(12)H(8)N(2))(2)], the Mn(II) atom lies on a twofold rotation axis, and is six-coordinated in a distorted trans-N(4)O(2) octa-hedral environment by four N atoms from two 1,10-phenanthroline ligands and two O atoms from two nitrate anions. The nitrate anion is disordered about a twofold rotation axis with fixed occupancy factors of 0.5. In the crystal, mol-ecules are linked by weak C-H⋯O hydrogen bonds and π-π stacking inter-actions [centroid-centroid distance = 4.088 (5) Å] into a three-dimensional supra-molecular network.

Poly[octakis(1H-imidazole-κN(3))octa-µ-oxido-tetra-oxidodicopper(II)tetra-vanadate(V)].

In the title inorganic-organic hybrid compound, [Cu(2)V(4)O(12)(C(3)H(4)N(2))(8)](n), the V(V) ion is tetra-coordinated by four O atoms and the Cu(II) ion is hexa-coordinated by four N atoms from four imidazole ligands and two O atoms from two tetra-hedral vanadate (VO(4)) units in a distorted octa-hedral geometry. The structure consists of two-dimensional sheets constructed from centrosymmetric cyclic [V(4)O(12)](4-) anions covalently bound through O to [Cu(imidazole)(4)](2+) cations. Adjacent sheets are linked by N-H⋯O hydrogen bonds and weak C-H⋯π inter-actions (H⋯centroid distances = 2.59, 2.66, 2.76, 2.91 and 2.98 Šinto a three-dimensional supra-molecular network.