Three 3D Lanthanide–Organic Frameworks Based on Novel Flexible Multicarboxylates: From ssa to rtl Topologies

Three lanthanide–organic frameworks have been solvothermally synthesized and characterized. Complex 1 {[Pr2(bbda)(OH)2(H2O)6]·12H2O}n (H4bbda = 5,5′-(2,4,6-trimethyl-1,3-phenylene)bis(methylene)bis(oxy)diisophthalic acid) is a 3D porous framework belonging to a 2-nodal net with the ssa topology. The coordinated formate ligand from in situ hydrolyzation of dmf binds metal centers to generate rigid rod-shaped SBUs (secondary building units) in both complexes 2 and 3, [Ln(HCOO)(L1)(dmf)]n (Ln = Er (2), Tm (3), H2L1 = 2,2′-(2,3,5,6-tetramethyl-1,4-phenylene) bis(methylene)bis(sulfanediyl)dibenzoic acid, dmf = N,N′-dimethylformamide). The flexible ligand H4bbda in complex 1 exhibits syn conformation, while the flexible ligand H2L1 in complexes 2 and 3 adopts anti conformation. The anti L1 ligand links the rod-shaped SBUs to give 2 and 3 3D network with the rtl topology

Three 3D Lanthanide–Organic Frameworks Based on Novel Flexible Multicarboxylates: From ssa to rtl Topologies

Three lanthanide–organic frameworks have been solvothermally synthesized and characterized. Complex 1 {[Pr2(bbda)(OH)2(H2O)6]·12H2O}n (H4bbda = 5,5′-(2,4,6-trimethyl-1,3-phenylene)bis(methylene)bis(oxy)diisophthalic acid) is a 3D porous framework belonging to a 2-nodal net with the ssa topology. The coordinated formate ligand from in situ hydrolyzation of dmf binds metal centers to generate rigid rod-shaped SBUs (secondary building units) in both complexes 2 and 3, [Ln(HCOO)(L1)(dmf)]n (Ln = Er (2), Tm (3), H2L1 = 2,2′-(2,3,5,6-tetramethyl-1,4-phenylene) bis(methylene)bis(sulfanediyl)dibenzoic acid, dmf = N,N′-dimethylformamide). The flexible ligand H4bbda in complex 1 exhibits syn conformation, while the flexible ligand H2L1 in complexes 2 and 3 adopts anti conformation. The anti L1 ligand links the rod-shaped SBUs to give 2 and 3 3D network with the rtl topology

Polymorphism in High-Crystalline-Stability Metal−Organic Nanotubes

By application of mixed organic ligands of 5-amino-2,4,6-triiodoisophthalic acid (H2ATIBDC) and 4,4′-bipyridine (bpy) to assemble with Zn ions at room temperature, two novel polymorphic structures, Zn(ATIBDC)(bpy)·3H2O (denoted as MONT-1 and MONT-2), possessing one-dimensional metal−organic nanotubular structures have been synthesized and characterized. MONT-1 was generated by connection of the zero-dimensional Zn-bpy squares through the bridging ATIBDC ligands, while MONT-2 was formed by connection of the one-dimensional Zn-bpy helix through the ATIBDC ligands. Both nanotubes possess highly crystalline stabilities and can absorb the uncoordinated water molecules reversibly

A Metal−Organic Nanotube Exhibiting Reversible Adsorption of (H₂O)₁₂ Cluster

A Metal−Organic Nanotube Exhibiting Reversible Adsorption of (H2O)12 Cluste

Polymorphism in High-Crystalline-Stability Metal−Organic Nanotubes

By application of mixed organic ligands of 5-amino-2,4,6-triiodoisophthalic acid (H2ATIBDC) and 4,4′-bipyridine (bpy) to assemble with Zn ions at room temperature, two novel polymorphic structures, Zn(ATIBDC)(bpy)·3H2O (denoted as MONT-1 and MONT-2), possessing one-dimensional metal−organic nanotubular structures have been synthesized and characterized. MONT-1 was generated by connection of the zero-dimensional Zn-bpy squares through the bridging ATIBDC ligands, while MONT-2 was formed by connection of the one-dimensional Zn-bpy helix through the ATIBDC ligands. Both nanotubes possess highly crystalline stabilities and can absorb the uncoordinated water molecules reversibly

An Open Neodymium−Organic Framework with the NbO Structure Type Based on Binuclear SBU Involved In Situ Generated Formate

The solvothermal reaction of Nd(NO3)3·6H2O and 5-amino-2,4,6-triiodoisophthalic acid (H2atiip) in DMF/ethonal/H2O (5:2:1) in the presence of pyridine gave rise to a new open neodymium−organic framework having the NbO structure type, [Nd(HCOO)(atiip)(DMF)2]·DMF·H2O (1). Complex 1 can keep its diffraction pattern even after being heated to 200 °C

An Open Neodymium−Organic Framework with the NbO Structure Type Based on Binuclear SBU Involved In Situ Generated Formate

The solvothermal reaction of Nd(NO3)3·6H2O and 5-amino-2,4,6-triiodoisophthalic acid (H2atiip) in DMF/ethonal/H2O (5:2:1) in the presence of pyridine gave rise to a new open neodymium−organic framework having the NbO structure type, [Nd(HCOO)(atiip)(DMF)2]·DMF·H2O (1). Complex 1 can keep its diffraction pattern even after being heated to 200 °C

An Open Neodymium−Organic Framework with the NbO Structure Type Based on Binuclear SBU Involved In Situ Generated Formate

The solvothermal reaction of Nd(NO3)3·6H2O and 5-amino-2,4,6-triiodoisophthalic acid (H2atiip) in DMF/ethonal/H2O (5:2:1) in the presence of pyridine gave rise to a new open neodymium−organic framework having the NbO structure type, [Nd(HCOO)(atiip)(DMF)2]·DMF·H2O (1). Complex 1 can keep its diffraction pattern even after being heated to 200 °C

An Open Neodymium−Organic Framework with the NbO Structure Type Based on Binuclear SBU Involved In Situ Generated Formate

The solvothermal reaction of Nd(NO3)3·6H2O and 5-amino-2,4,6-triiodoisophthalic acid (H2atiip) in DMF/ethonal/H2O (5:2:1) in the presence of pyridine gave rise to a new open neodymium−organic framework having the NbO structure type, [Nd(HCOO)(atiip)(DMF)2]·DMF·H2O (1). Complex 1 can keep its diffraction pattern even after being heated to 200 °C

An Open Neodymium−Organic Framework with the NbO Structure Type Based on Binuclear SBU Involved In Situ Generated Formate

The solvothermal reaction of Nd(NO3)3·6H2O and 5-amino-2,4,6-triiodoisophthalic acid (H2atiip) in DMF/ethonal/H2O (5:2:1) in the presence of pyridine gave rise to a new open neodymium−organic framework having the NbO structure type, [Nd(HCOO)(atiip)(DMF)2]·DMF·H2O (1). Complex 1 can keep its diffraction pattern even after being heated to 200 °C