Fluorosulfuric Acid, Its Salts, and Derivatives

Bis(carbonyl)platinum(II) Derivatives: Molecular Structure ofcis-Pt(CO)2(SO3F)2, Complete Vibrational Analysis ofcis-Pt(CO)2Cl2, and Attempted Synthesis ofcis-Pt(CO)2F2

“…As eq 2 suggests, the synthesis of cis-Pt(CO) 2 (SO 3 F) 2 33 by reductive carbonylation of Pt(SO 3 F) 4 28 in fluorosulfuric acid [29][30][31] appears to proceed in a manner similar to that of cis-Pt(CO) 2 Cl 2 . HSO 3 F is used both in the synthesis of Pt(SO 3 F) 4 from Pt powder and bis(fluorosulfuryl)peroxide, S 2 O 6 F 2 , 51 and as the reaction medium for the subsequent reductive carbonylation, which no longer involves only commercially available reagents.…”

“…[4][5][6] The observed order of stability 19,23,24,26 suggests that Pt(CO) 2 F 2 will show even higher thermal stability than the chloride; however, this compound has not been synthesized so far, and transition metal carbonyl fluorides of group 10 metals are rather uncommon. 27a,b The formal substitution of Clby a more electronegative ligand, the SO 3 Fanion, is achieved by the reductive carbonylation of Pt(SO 3 F) 4 28 in the Brønsted superacid HSO 3 F, [29][30][31][32] where cis-Pt(CO) 2 (SO 3 F) 2 forms 33 via the mixed-valency intermediate [Pt(CO) 4 ][Pt(SO 3 F) 6 ]. 34 In an analogous manner cis-Pd(CO) 2 (SO 3 F) 2 is obtained 33 by the reductive carbonylation of the mixed-valency compound Pd[Pd(SO 3 F) 6 ] 35 in HSO 3 F. While there is an early, erroneous report, 36 it is generally agreed 19,[23][24][25][37][38][39] that cis-Pd(CO) 2 Cl 2 is nonexisting.…”

Superelectrophilic Tetrakis(carbonyl)palladium(II)- and -platinum(II) Undecafluorodiantimonate(V), [Pd(CO)4][Sb2F11]2 and [Pt(CO)4][Sb2F11]2: Syntheses, Physical and Spectroscopic Properties, Their Crystal, Molecular, and Extended Structures, and Density Functional Calculations: An Experimental, Computational, and Comparative Study

“…A new synthetic methodology, the use of various superacids , as reaction media in carbonylation and solvolysis reactions, provides a viable pathway to a wide range of homoleptic metal carbonyl cations, ,, among them many superelectrophilic cations, with ionic charges of +2 and +3. Superacids, which are extensively used to generate and stabilize a wide range of carbocations, have found in the past only occasional use in transition metal chemistry. , The superacids employed by us are the Brønsted superacids anhydrous HF and HSO 3 F, − the strongest protonic acids known, the Lewis superacid SbF 5 , , the strongest molecular Lewis acid, , and the conjugate Brønsted−Lewis superacids, which have the highest Brønsted acidities, , HF−SbF 5 46,47,60,61 and HSO 3 F−SbF 5 46,47,62 known as “magic acid” . Isolable, thermally stable salts are frequently formed with the superacid anion [Sb 2 F 11 ] - , which forms by self-assembly during reactions in SbF 5 , HF−SbF 5 , and surprisingly also in HSO 3 F−SbF 5 . , …”

Uranium(IV) trifluoromethanesulfonate and some ternary uranium(IV) trifluoromethanesulfonates

“…The exact order of I their acid strength is, however, the subject of discussion. A / large number of derivatives are known for both acids (1)(2)(3)(4).…”