Cobalt trifluoromethanesulfonato

RuClsHisNs, Ruthenium(III), pentaammine-chloro-, dichloride, 24 255 RuCI]N4C2oH,g 2H2O, Ruthenium(III), bis-(2,2 -bipyridine-lV, IV )dichloro-, cis-, chloride, dihydrate, 24 293 RuCojHOi2C,2, Cobalt, dodecacarbonylhy-dridorutheniumtri-, 25 164 RuFgNsOgS2C27H , Ruthenium(II), (2,2 -bi-pyrichne-N,N )(2,2 6, 2"-terpyridine-N, N, N )(trifluoromethanesulfonato-O)-, trifluoromethanesulfonate,... 

CoF N30,S3C7Hi4, Cobalt(Ul), [N-(2-amino-cthyl)-1,2-ethanediamine]tris-(trifluoromethanesulfonato)-, fac-, 22 106... 

CoFJ J 0,S3C,H,5, Cobalt(III), pentaammine-(trifluoromethanesulfonato)-, trifluoro-methanesulfonate, 22 104... 

A. PENTAMMINE(TRIFLUOROMETHANESULFONATO)COBALT(III) TRIFLUOROMETHANESULFONATE, [Co(NH3)sOS02CF3 ](CF3SO)2... 

C. /ac-TRIS (TRIFLUOROMETHANESULFONATO)[A-(2-AMINOETHYL)-1,2-ETH ANEDIAMINE ] COBALT (III), Co(dien)(OS02CF3)3... 

Complexes of trifluoromethanesulfonate anion with cobalt(III) are labile oward substitution under mild conditions, and they have proved to be useful synthetic precursors to a variety of aminecobalt(III) complexes. The pentaammine-(trifluoromethanesulfonato-O)rhodium(III) ion, which is readily prepared from [Rh(NH3)5Cl]Cl2 in hot CF3SO3H, is also versatile as a synthetic precursor. " Its synthesis and solvolysis to give essentially quantitative yields of the penta-ammineaqua- and hexaamminerhodium(III) ions are described below. The aqua complex has previously been prepared by the base hydrolysis or Ag -induced aquation of [Rh(NH3)5Cl]Cl2 in water, but the present method presents a cleaner and more rapid alternative. The methods for preparation of the [RhCNHj) ] ion have evolved from the procedure of J0rgensen. They involve prolonged reaction of [Rh(NH3)5Cl]Cl2 with ammonia in a pressure vessel at elevated temperature. The solvolysis of [Rh(NH3)5(0S02CF3)](CF3S0j)2 in liquid ammonia is a simple, high-yield, and rapid alternative. 

PENTAKIS(METHANAMINE)-(TRIFLUOROMETHANESULFONATO-O) COMPLEXES OF CHROMIUM(III), COBALT(III), AND RHODIUM(III)... 

Syntheses reported for the pentaammine(trifluoromethanesulfonato-O) complexes can be readily adapted for other amine or multidentate amine analogs. Syntheses of coIbalt(III) complexes with 1,2-ethanediamine or A -ethyl-l,2-eth-anediamine ligands have been reported earlier in this series. To exemplify the procedures further, trifluoromethanesulfonato-O complexes of cobalt(III), chro-mium(III), and rhodium(III) with unidentate methylamine ligands based on the readily prepared [M(NH3)5Cl]Cl2 precursors are reported here. The following sections report syntheses of 1,2-ethanediamine complexes of Rh(III) and Irflll) and of Ru(II) and Os(II) diimines with trifluoromethanesulfonato ligands. Such syntheses indicate the diversity of the synthesis technique, and the complexes described are excellent precursors for other compounds. 

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