Studies on heteroatom phosphorus–fluorine compounds by Michael J.C. Hewson

“…A new series of aryloxy-fluorophosphoranes of general formula RnPF2(OC6F5)3-n (where n = 0, 1, 2; R = Me, Ph, Me2N, Et2N) have been prepared from the reaction of the Lewis base silyl ether pentafluorophenyltrimethylsilyl ether with the Lewis acid fluorophosphoranes RnPF5-n (where n = 0, 1, 2; R = Me, Ph, Me2N, Et2N). …”
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Rhenium calix[4]arenes: precursors to novel imaging and cancer therapy agents by Carl Redshaw, Xiaoming Liu, Shuzong Zhan, David L. Hughes, Hugo Baillie-Johnson, Mark Elsegood, Sophie H. Dale

“…Interaction of [ReOCl3(PPh3)2] with tert-butylcalix[4]areneH4, Cax(OH)4, in the presence of MOtBu (M = Na, K), or MH, under anaerobic conditions affords the isostructural rhenium(V) oxo complexes [Re(O)(PPh3)Cax(O)4M(NCMe)2] · 4MeCN [M = Na, (1); K, (2)] containing an alkali-metal cation within an elliptical ligand conformation. …”
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