ChemInform Abstract: Synthesis and Crystal Structure of Nitrosofluorotetrammines of Osmium and Ruthenium.

Abstract

Starting from (MNO(NH3)4OH) (NO2)2 (M: Ru, Os) or from (MNOF5) (NO2)2, whose cations are converted to (MNO(NH3)4F)2+ on treatment with NH4HF2 at 200 °C, the hitherto unknown title compounds (I)‐(IV) are prepared.

Nitrosylation of Hexafluoridotechnetate(IV)

“…The co‐crystallized (HF 2 ) – anion shows resonances at 1278 and 1215 cm –1 [ν 2 (E)] and 655 cm –1 [ν 1 (A 1 g)], the assignment of which was done with respect to the spectrum of NaHF 2 16. Hydrogen bonds of the type F ··· H–N between ammine ligands and the [TcF 6 ] 2– counterion can be assigned with reference to the IR spectra of [M(NO)(NH 3 ) 4 F][SiF 6 ] 17. The Tc–NO vibration gives a band at 602 cm –1 .…”

Combining photoinduced linkage isomerism and nonlinear optical properties in ruthenium nitrosyl complexes

“…In the next step, the resulting yellow crystalline powder with presumed formula trans-[RuNO(NH 3 ) 4 F](H n F n+1 ) 2 was dissolved in water in a glass tube, leading to the formation of trans-[RuNO(NH 3 ) 4 F]SiF 6 single crystals. In an earlier report on the synthesis of trans-[RuNO(NH 3 ) 4 F] 2+ (Sinitsyn et al, 1989), the precursor complexes trans-[RuNO(NH 3 ) 4 OH]-(NO 2 ) 2 or K 2 [RuNOF 5 ]ÁH 2 O were heated with molten NH 4 HF 2 at 473 K for $1 h in a platinum melting pot. The treatment of the precursor in these aggressive conditions indicates the high thermal stability of the trans-[RuNO(NH 3 ) 4 F] 2+ cation.…”