@article {1080, title = {Are the NF4+ Cations in NF4BF4 Really Nontetrahedral?}, journal = {Inorganic Chemistry}, volume = {45}, year = {2006}, pages = {7981-7984}, author = {R. Haiges and M. Gerken* and A. Iuga and R. Bau and K. O. Christe*} }