Chlorophosphaalkenyl- and chloroalkenylstibanes

Phosphines and related C–P bonded compounds

“…348 Chlorophosphaalkenylstibines, e.g., (166), have been obtained from the reactions of Mes*PQ C(SiMe 3 )Li or the phosphaalkene carbenoid Mes*PQC(Cl)Li with fluorostibines. 349 The behaviour of the CQP functionality of phosphaalkenes and related heterocyclic systems in Diels-Alder reactions has been reviewed. 350 Phosphaalkenes have been introduced as long-lived phosphorus cluster surface functional groups to a niobium-supported P 7 cage structure.…”

Nitrogen, phosphorus, arsenic, antimony and bismuth

“…The reaction of SbF 3 with Mes*PQCCl(Li) results in the formation of Sb(CClQPMes*) 3 -a range of derivatives with different numbers of phosphaalkene substituents were also reported. 115 A series of calixarenes containing antimony or bismuth have been prepared. 116 In the reaction of SbCl 3 or BiCl 3 with p-tert-butylcalix [4]arene two pnictogen groups are incorporated in the organic scaffold.…”

Hypervalent diorganoantimony(iii) fluorides via diorganoantimony(iii) cations – a general method of synthesis

“…[1][2][3][4][5][6] A survey of the literature concerning organoantimony(III) uorides revealed some interesting aspects with regard to the preparation of the few R 2 SbF 7-12 and RSbF 2 (ref. [11][12][13][14] species reported so far. In earlier works [NH 4 ] 2 [PhSiF 5 ] was used for phenylation of SbF 3 in aqueous solution to give Ph 2 SbF.…”

“…8 However, the uorination was effective when the dibenzoazastibocine chloride MeN(CH 2 C 6 H 4 ) 2 SbCl was reacted with KF in DMF solution. 9 While the partial phenylation of SbF 3 with PhLi or PhMgBr reagents failed, the isolated product always being Ph 3 Sb regardless of the molar ratio of the reagents used, 8 for other organolithium reagents the reaction with SbF 3 led to the desired organoantimony(III) uorides, [10][11][12] even if the stoichiometry could not be fully controlled and from the reaction mixture both R 2 SbF and RSbF 2 were isolated by fractional crystallization, e.g. for R ¼ 2,4,6-t Bu 3 C 6 H 2 .…”

“…for R ¼ 2,4,6-t Bu 3 C 6 H 2 . 11,12 Taking into account the ability of the organoantimony(V) cations to react with the uoride anions we have decided to investigate the possibility to prepare diorganoantimony(III) uorides using ionic species such as the diorganoantimony(III) cation, [R 2 Sb] + . Monocations of this type can be stabilized by intermolecular [19][20][21][22][23][24] We report herein a new route for the preparation of the diorganoantimony(III) uorides via ionic diorganoantimony(III) derivatives stabilized by (C,N)-chelating ligands as well as their structural characterization both in solution and in the solid state.…”