Creative Construction of a Series of Chiral 3D Indium–Organic Frameworks with a umy Topology

Abstract

Using 2,2′-R 2 -biphenyl-4,4′-dicarboxylic acid to bind with a cis-, have been hydrothermally synthesized without chiral reagents. Crystal structure analyses reveal that 1−3 show an unprecedented 4-connected umy topology with the Schlafi symbol (4 2 •6 4 ). 1 exhibits high water stability and good sorption selectivity of CO 2 over N 2 , while 3 displays high C 2 H 2 , C 2 H 4 , and C 2 H 6 uptake capacity at 273 K.

Coordination Polymers Driven by Carboxy Functionalized Picolinate Linkers: Hydrothermal Assembly, Structural Multiplicity, and Catalytic Features

“…As a result, a dinodal 4,4-linked net with a (4 2 .6.8 3 ) point symbol and a unique topology is generated (Figure c). This compound can also be considered as a rod-like structure and contributes to an important family of MOFs with unique or rare types of topologies. − Further simplification of the framework using ToposPro software and considering the {Cd 2 (μ-COO) 2 } motifs as the 6-connected nodes results in a binodal 3,6-linked net with a jxj topology and a point symbol of (4 2 .6) 2 (4 4 .6 2 .8 9 ). , …”

A novel topological indium–organic framework for reversible ammonia uptake under mild conditions and catalysis

“…The In-Cl bond length is 2.461(5) Å and the In-O distances are in the range of 2.079(6)-2.187(7) Å, which are similar to those found in the related InOFs. 31,44 Two carboxyl groups of the H 2 L ligand are deprotonated, and the resulting L 2− ligand adopts only one type of coordination mode: a syn-syn bis(bridging bidentate) mode to connect four In 3+ cations. Notably, one carboxyl group coordinates to two same In 3+ ions (In2), while the other links two different In 3+ ions (In1 and In2, Fig.…”

“…[26][27][28] As a proof-of-concept study, in this paper we develop a new strategy for reversible NH 3 uptake under milder conditions by simultaneously combining m 2 -OH − and Cl − ions, m 2 -H 2 O and -CH 3 groups into an indium-organic framework (InOF), while InOFs have recently become a research hotspot due to the high chemical stabilities, 29 diverse coordinated modes and intriguing topological structures. [30][31][32] Based on these considerations and our previous work on substituted biphenyl-4,4 0 -dicarboxylic acids, [33][34][35][36][37][38][39][40][41][42] herein, by choosing 2,2 0dimethylbiphenyl-4,4 0 -dicarboxylic acid (H 2 L) as a bridging ligand to react with In 3+ ion under solvothermal conditions, a novel stable 3D InOF, [In 8 (m 2 -OH) 6 (m 2 -H 2 O) 3 L 6 Cl 6 ]$ 5DMF$4H 2 O (1), has been successfully constructed. InOF 1 exhibits an unprecedented trinodal 3,3,4-connected topology with the Schläi symbol (4$8$10) 3 (4$8 3 $10 2 ) 3 (8 3 ).…”

A Two-Way Rod-Packing Indium-Based Nanoporous Metal–Organic Framework for Effective C2/C1 and C2/CO2 Separation

“…Fitting the adsorption isotherm with the Brunauer–Emmet–Teller (BET)/Langmuir models enabled the derivation of the corresponding specific surface areas, which were estimated to be 1119/1237 m 2 g –1 (Figure S5). The BET surface area is among the highest recorded for rod InOFs such as In­(μ 2 -OH)­L3 (1694 m 2 g –1 ), [In 2 (OH) 2 (TBAPy)] (1189 m 2 g –1 ), InPF-110 (1125 m 2 g –1 ), InOF-1 (1065 m 2 g –1 ), JLU-Liu7 (879 m 2 g –1 ), MIL-68­(In) (746 m 2 g –1 ), and SNNU-120/121 (666/799 m 2 g –1 ) . The total pore volume calculated according to the saturated adsorptive quantity of N 2 of 287 cm 3 (STP) g –1 is 0.44 cm 3 g –1 , which approaches the theoretical value of 0.50 cm 3 g –1 based on the cif file, implying good sample activation.…”