《Chalcogen Bonding of SO2 and s-Block Metal Iodides Near Room Temperature: A Remarkable Structural Diversity》 was published in European Journal of Inorganic Chemistry in 2020. These research results belong to Dankert, Fabian; Feyh, Anne; von Haenisch, Carsten. Electric Literature of C10H20O5 The article mentions the following:
In this contribution the authors have systematically explored the coordination chem. of the iodide anion towards SO2. While employing large organocations like s-block metal complexes of crown-ethers, the authors discovered a remarkable structural diversity within the herein characterized compounds together with novel architectures of SO2 solvates. The observed O2S···I- interactions are strong enough to determine the crystal packing and dimensionality. In the light of chalcogen bonding, the small mol. SO2 is introduced as a supramol. synthon. In the light of a chem. in non-aqueous solutions, the ISO2- anion is revisited. Chalcogen bonding was established to form one-dimensional networks in the compounds [Li([12]crown-4)H2O]I·SO2 (1), [Na([15]crown-5)(SO2)I] (2), [K([18]crown-6)(SO2)I] (4), [NH4([18]crown-6)]I·SO2 (5), [Rb([18]crown-6)I(SO2)]·2SO2 (6) and [Cs([18]crown-6)(SO2)2I] (7) all of which were obtained by 1:1 complexation of the resp. iodide salt and resp. crown-ether in SO2 solution Two-dimensional networks were obtained within the alk. earth metal compounds [Mg([12]crown-4)2]I2·4SO2 (9) and [Ba2([18]crown-6)2(SO2I)(SO2)2I3]·SO2 (11). The iodosulfite ion ISO2- was obtained either by shielding Na+ ions with [12]crown-4, conversion of MgI2 with [15]crown-5, conversion of CaI2 with [18]crown-6 or conversion of BaI2 with [18]crown-6 (11, as aforementioned). [Na([12]crown-4)2]ISO2 (3), [Mg([15]crown-5)(ISO2)2] (8) and [Ca2([18]crown-6)(SO2I)3]I3 (10) were characterized. In these resp. compounds the S···I atom distances are considerably shorter than those previously reported. Exptl. data around the chem. of halosulfites is provided. Besides network structures and the iodosulfite formation, an SO2-rich aggregate could be observed An SO2 adduct of the composition [I2(SO2)5]2- is present in [Na([12]crown-4)2]I·2.75SO2 (3a). After reading the article, we found that the author used 1,4,7,10,13-Pentaoxacyclopentadecane(cas: 33100-27-5Electric Literature of C10H20O5)
1,4,7,10,13-Pentaoxacyclopentadecane(cas: 33100-27-5) is a member of crown ether Ligands. Crown-ethers are macrocyclic polyethers capable of forming host-guest complexes, especially with inorganic and organic cations. Crown-ethers can incorporate protonated primary amine compounds by formation of ion-dipole bonds with the oxygen atoms of the chiral selector. Crown-ethers have been widely used for the separation of several pharmaceuticals both in aqueous and non-aqueous media. Electric Literature of C10H20O5
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem