Solvothermal synthesis and characterization of coordination polymers of cobalt(II) and zinc(II) with succinic acid

Construction of Pyrazine-Appended 1D and 3D Cobalt(II) Succinate Coordination Polymers: Influence of Solvent on Architectures and Applications in Gas Adsorption and NAC Detection

“…In total, four carboxylate oxygen atoms of three different succinate ligands coordinate a single cobalt ion (κ 4 - O , O ′, O ″, O ‴ mode), while one pyz ligates per cobalt via the κ-N mode (Figure ). ,,− The Co1–O bond distances range from 2.0154(17) to 2.2137(17) Å, while that of Co1–N1 is 2.164(2) Å. However, the bond distances for Co2–O lie between 1.9956(16) and 2.2786(17) Å and that for Co2–N2 is 2.179(2) Å (Table S1).…”

“…The succinate ligands adopt anti–anti conformation with torsion angle χ­[C(1)­C(2)­C(3)­C(4)] = −168.62°. The orientation of carboxylate with respect to the backbone line of succinate generates angles [O(1)­C(1)­C(2)], [O(4)­C(4)­C(3)], and [O(3)­C(4)­C(3)] equal to 116.63, 117.86, and 119.37°, respectively. , Pyrazine ligates cobalt via κ-N mode. ,− On viewing 1 along the c direction, pyz forms a bridge between the cobalt centers with an intrachain Co···Co separation distance of 7.147(0) Å (Figure ). While on perceiving 1 in the a -axis (Figure S1), two rings are seen: a 14-membered ring built from two cobalt centers [Co­(a) and Co­(b)] stitched in a cis fashion by sharing two succinate oxygen atoms (O1 and O3 i ) in the bis -monodentate mode and a larger 22-membered ring composed of four cobalt centers [Co­(b) and Co­(e)] connected by O4 ii and O1 of succinate in the bis -monodentate fashion and Co­(c) and Co­(d) linked via O1 and O4 ii of succinate in the same mode.…”

“…The intrachain Co···Co separation distance through bridging pyz is 7.215(0) Å, and that bridged by succinate is 7.726(5) Å (Figure S3a,b). ,− The propagation of 2 in the b direction through succinate results in the formation of rectangular grids of 7.215(0) × 7.726(5) Å dimensions (Figure ). Topological study of 2 reveals succinate bridging of two cobalt centers in the bis -monodentate fashion by coordination of two oxygen atoms of one succinate linking to two cobalt atoms.…”

CdIIMOFs Constructed Using Succinate and Bipyridyl Ligands: Photoluminescence and Heterogeneous Catalytic Activity

“…Though less frequently employed in MOFs than aromatic dicarboxylates, a few examples of MOFs featuring α,ω-alkane dicarboxylates have been reported. [15][16][17][18][19][20] A systematic investigation of MOFs containing these α,ω-alkane (or alkene) dicarboxylates is warranted and important.…”

Zn-MOFs Containing Flexible α,ω-Alkane (or Alkene)-Dicarboxylates and 1,2-Bis(4-pyridyl)ethane Ligands: CO2 Sorption and Photoluminescence

“…One particular group of flexible dicarboxylates, α,ω-alkane-dicarboxylates, has been shown to be particularly suitable as ligands in MOFs of various topologies. Though less frequently employed in MOFs than aromatic dicarboxylates, a few examples of MOFs featuring α,ω-alkane dicarboxylates have been reported. − A systematic investigation of MOFs containing these α,ω-alkane (or alkene)-dicarboxylate is warranted and important.…”