EPR‐Einkristalluntersuchungen System Fe(NO)(Et₂dsc)₂/In(Et₂dsc)₃ (Et₂dsc = Diethyldiselenocarbamat). Kristall‐ und Molekülstruktur von Tris(diethyldiselenocarbamato)indium(III), In(Et₂dsc)₃

Abstract

Es wird über eine EPR‐Einkristalluntersuchung (T = 295 K) an Bis(diethyldiselenocarbamato)nitrosyleisen(I), eingebaut in Tris(diethyldiselenocarbamato)indium(III), berichtet. Die EPR‐Spektren wurden bei Raumtemperatur im X‐Band aufgenommen. Die für die Tensoren g und AN gefundene rhombische Symmetrie mit g1 = 2,048, g2 = 2,058, g3 = 2,062; A 1N = 9,2 · 10−4 cm−1, A 2N = 10,0 · 10−4 cm−1 und A 3N = 11,3 · 10−4 cm−1 steht im Einklang mit der für den Tris(diethyldiselenocarbamato)‐InIII‐Komplex gefundenen Kristallstruktur. Die Hyperfeinstruktur‐Parameter werden zur Bestimmung der Spindichteverteilung benutzt. Die röntgenkristallographischen Daten von In(Et2dsc)3 Raumgruppe P21/c, a = 6,731(3) Å, b = 18,05(9) Å, c = 20,914(10) Å, α = 90.02(2)°, β = 93,74(2)° und γ = 90,01(2)°) werden vorgestellt.

Molecular and supramolecular chemistry of mono- and di-selenium analogues of metal dithiocarbamates

“…The two known octahedral indium(III) structures, In(Se2CNR2)3 for R = Et (36) [68], Fig. 16, and i-Pr (37) [36] conform to those found for the monoselenothiocarbamates described in 2.4 and by implication to Co(SeSCNEt2)3 (6) [36] illustrated in Fig.…”

Coordination and Organometallic Chemistry of Metal−NO Complexes

“…Magnetic susceptibility and Mössbauer measurements on [Fe(NO)(salen)] 2+ have detected transitions between the S = 3/2 and S = 1/2 spin states . In contrast to this behavior, the isoelectronic five-coordinate iron(I) complexes Fe(NO)(E 2 CNR 2 ) 2 (E = S, Se) and [Fe(NO)(S 2 CC(CN) 2 ) 2 ] 2- have been found to be pure low-spin species by ESR spectroscopic and magnetic susceptibility methods. − Kirmse and co-workers have utilized isotopic labeling techniques to prove that trace amounts of Fe(NO)(S 2 CNEt 2 ) 2 are responsible for a previously ill-explained triplet at g = 2.0 in the ESR spectrum of Fe(S 2 CNEt 2 ) 3 . The nitrosyl-containing impurity is present as a result of traces of nitrate ions in the FeCl 3 starting materials .…”