Crystal structure of catena-tetraaquasuccinato-O,O’-cobalt(II), CO(C4H4O4)(H2O)4

Abstract

Source of materialThe title compound was synthesized by the reaction of 0.5 g (4.23 mmol) succinic acid with an excess of fresh C0CO3 in 50 ml double destilled water, followed by filtrating the unreacted C0CO3 out. Rose-colored rhombohedral crystals grew at room temperature after slow evaporation for several days. DiscussionThe title compound is isostructural with Ni(C4H404)(H20)4 [1]. In the crystal structure, the Co atom is octahedrally coordinated by two О atoms of two bridging OOC-CH2-CH2-COO anions in

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

“…The crystal structure of cobalt succinate tetrahydrate, i.e., [Co­(H 2 O) 4 (suc)] ( 6 ) is well documented in the literature and isostructural with Ni, Fe, Mg, and Mn analogues. ,− The refinement details for 6 are presented in Table S4. It crystallizes in the monoclinic P 21/ c space group, where cobalt is octahedrally coordinated to two succinate oxygen atoms (O6 and O8 i ) and four water molecules (O1w–O4w) (Figure S9).…”

“…38 In addition to this, compounds [Co-(HCOO) 2 (pyz)] 5 and [Co(H 2 O) 4 (suc)] 6 are wellknown. 39,40 Hence, bearing in mind the less explored chemistry of cobalt(II) with succinate and pyrazine, we have attempted the synthesis of five cobalt(II) coordination polymers by tuning the synthetic conditions and the solvent. On our way to prepare compounds 1−5, we obtained 6 and 7 as secondary products.…”

“…Fluorescence sensing is a promising strategy to tackle the detection of nitro explosives owing to its low cost, electronic tunability, portability, and easy operation. − To the best of our knowledge, the MOFs with succinate and pyrazine linkers together have not been explored, and only the coordination polymer [Cd 2 (H 2 O) 2 (pyz)­(suc) 2 ] has been reported . In addition to this, compounds [Co­(HCOO) 2 (pyz)] 5 and [Co­(H 2 O) 4 (suc)] 6 are well-known. , Hence, bearing in mind the less explored chemistry of cobalt­(II) with succinate and pyrazine, we have attempted the synthesis of five cobalt­(II) coordination polymers by tuning the synthetic conditions and the solvent. On our way to prepare compounds 1 – 5 , we obtained 6 and 7 as secondary products.…”

Crystal structure of tetraaquamanganese succinate, Mn(H2O)4C4H4O4

“…The title compound is the monoclinic modification of triclinic Mn(H20)4(C4H 4 04) as described by Gupta et al [1], It is isotypic with Co(H 2 0)4(C 4 H404) [2] and Ni(H20)4(C 4 H 4 04) [3], The structure consists of chains of succinate molecules along [101] which are connected by manganese octahedra. The chains are linked to each other by hydrogen bonds.…”

A comparison among bio-derived acids as selective eco-friendly leaching agents for cobalt: the case study of hard metals waste enhancement

“…Even if an extensive description of the crystal structure of the products overcomes the scope of this work, it is worthy to note that all the compounds reported here are characterized bearing Co(II) in an octahedral environment, where the anionic form of the acid coordinates the metal center as monodentate or bidentate, chelating and/or bridging ligand and the coordination sphere is completed by water molecules according with the literature. [25][26][27][28] As summarized, leaching reactions, beside Co complexation, may involve the oxidizing action of the organic acid (through H + reduction) which would result in H2 gas evolution and/or the oxidizing action of dissolved O2 which would be instead accompanied by O2 consumption and H2O formation. Specifically, using maleic, citric, succinic and itaconic acids, the leaching was accompanied by a noticeable H2 gas evolution.…”