(CrCl3)3@2[C4mim][OMe]—Molecular Cluster-Type Chromium(III) Chloride Stabilized in a Salt Matrix

In [C4mim]2[CrCl3]3[OMe]2 molecular (CrCl3)3 units are embedded in a salt matrix of [C4mim][OMe]. This structural subunit can be viewed as a trapped molecular polymorph of CrCl3. Experimental and theoretical investigations indicate that, in contrast to bulk CrCl3, metal−metal bonds are formed at low temperatures.