Thermal stability and structural studies on the mixtures of Mg(BH4)2 and glymes was written by Leick, Noemi;Tran, Ba L.;Bowden, Mark E.;Gennett, Thomas;Autrey, Tom. And the article was included in Dalton Transactions in 2022.Electric Literature of C8H18O4 This article mentions the following:
Coordination complexes of Mg(BH4)2 are of interest for energy storage, ranging from hydrogen storage in BH4 to electrochem. storage in Mg based batteries. Understanding the stability of these complexes is crucial since storage materials are expected to undergo multiple charging and discharging cycles. To do so, we examined the thermal stabilities of the 1 : 1 mixtures of Mg(BH4)2 with different glymes by DSC-TGA, TPD-MS and powder XRD anal. Despite their structural similarities, these mixtures show diverse phase transitions, speciations and decomposition pathways as a function of linker length. In the experiment, the researchers used many compounds, for example, 2,5,8,11-Tetraoxadodecane (cas: 112-49-2Electric Literature of C8H18O4).
2,5,8,11-Tetraoxadodecane (cas: 112-49-2) belongs to ethers. Ether is less polar than esters, alcohols or amines because of the oxygen atom that is unable to participate in hydrogen bonding due to the presence of bulky alkyl groups on both sides of the oxygen atom. But ether is more polar than alkenes. The unique properties of ethers (i.e., that they are strongly polar, with nonbonding electron pairs but no hydroxyl group) enhance the formation and use of many reagents. For example, Grignard reagents cannot form unless an ether is present to share its lone pair of electrons with the magnesium atom. Complexation of the magnesium atom stabilizes the Grignard reagent and helps to keep it in solution.Electric Literature of C8H18O4
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem