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Transition metal ether complex

In chemistry, a transition metal ether complex is a coordination complex consisting of a transition metal bonded to one or more ether ligand. The inventory of complexes is extensive. Common ether ligands are diethyl ether and tetrahydrofuran. Common chelating ether ligands include the glymes, dimethoxyethane (dme) and diglyme, and the crown ethers. Being lipophilic, metal-ether complexes often exhibit solubility in organic solvents, a property of interest in synthetic chemistry. In contrast, the di-ether 1,4-dioxane is generally a bridging ligand.

Bonding, structure, reactions
of cobalt(II) chloride and 1,4-dioxane. Ethers are L-type ligands. They are σ-donors that exert weak field ligands. They resemble water ligands as seen in aquo complexes. They do not, however, readily participate in hydrogen bonding. The ether oxygen is nearly trigonal planar in its complexes. : At higher concentrations of thf, polytetrahydrofuran is produced. ==Examples==
Examples
Homoleptic complexes Ethers are relatively bulky ligands, thus homoleptic (i.e., all ligands being the same) ether complexes are uncommon. Examples often feature weakly coordinating anions such as BArF4− and Al(ORF)4−. • [V(thf)6](BArF4)2 • [Mn(thf)6](Mn(CO)5]2 • Fe(thf)6[BArF24]2 • [Ni(thf)6][Al(ORF)4 ]2 Metal halide complexes . The sum of the angles at O is 352°, indicating a nearly planar ether oxygen. Color code: O = red, I = purple, Ni = blue, C = black. Metal chloride-tetrahydrofuran complexes are especially studied. These compounds are often reagents because they are soluble in organic solvents as well as being anhydrous. Metal carbonyl complexes • M(CO)5(thf) (M = Cr, Mo, W) • Mo(CO)3(diglyme) ==References==
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