Editing Ether (section)

=== Lewis bases ===
[[File:CSD CIF CANZOG10.png|thumb|right|172px|Structure of VCl3([[Tetrahydrofuran|thf]])3.<ref>{{cite journal|journal=Inorg. Chim. Acta |author=F.A.Cotton |author2=S.A.Duraj |author3=G.L.Powell |author4=W.J.Roth |year=1986|volume=113|page=81|title=Comparative Structural Studies of the First Row Early Transition Metal(III) Chloride Tetrahydrofuran Solvates|doi=10.1016/S0020-1693(00)86863-2}}</ref>{{legend|blue|[[Vanadium]], V}}{{legend|darkgreen|[[Chlorine]], Cl}}{{legend|grey|[[Carbon]], C}}{{legend|white|[[Hydrogen]], H}}{{legend|red|[[Nitrogen]], N}}]]

Ethers serve as [[Lewis base]]s. For instance, [[diethyl ether]] forms a [[Coordination complex|complex]] with [[boron trifluoride]], i.e. borane diethyl etherate ({{chem2|BF3*O(CH2CH3)2}}). Ethers also coordinate to the [[magnesium|Mg]] center in [[Grignard reagent]]s. [[Tetrahydrofuran]] is more basic than [[Open-chain compound|acyclic]] ethers. It forms with many [[transition metal ether complex|complex]]es.