Reversible capping/uncapping of phosphorous-centered Keggin-type polyoxoniobate clusters.
- Author(s): Son, Jung-Ho
- Casey, William H
- et al.
Published Web Locationhttps://doi.org/10.1039/c4cc05689b
Caps in α-Keggin-type polyoxometalates [PM2Nb12O40](9-) (M: Nb[double bond, length as m-dash]O or V[double bond, length as m-dash]O) can be removed in basic condition to produce uncapped [PNb12O40](15-). Transmetalation or capping occurs from the reaction of [PNb14O42](9-) or [PNb12O40](15-) with either Sb2O3 or V2O5 to form [PSb2Nb12O40](9-) or [PV2Nb12O42](9-), respectively.