Supplementary information files for Reaction of Ph₂C(X)(CO₂H) (X = OH, NH₂) with [VO(OR)₃] (R = Et, nPr): structure, magnetic susceptibility and ROP capability

(c) The Authors, CC BY-NC 3.0

Supplementary files for article Reaction of Ph₂C(X)(CO₂H) (X = OH, NH₂) with [VO(OR)₃] (R = Et, nPr): structure, magnetic susceptibility and ROP capability

Reaction of [VO(OR)3] (R = Et, nPr) with 2,2’-diphenylglycine afforded the alkoxide-bridged dimers {[VO(OR)(mu-OR)[Ph2C(NH2)(CO2)]}2, whereas use of benzilic acid, in the presence of alkali metals, afforded 16-membered metallocycles {V8(O)4M(OR)8[Ph2C(OH)(CO2)]12} (M = <1 Na, K). For the ring systems, magnetic susceptibility data is consistent with mixed-valance vanadium with an average oxidation state of 3.5. The dimer and ring systems are capable of the ring opening polymerisation (ROP) of ε-caprolactone under N2, air, or as melts affording mostly low to medium molecular weight cyclic and linear products.