IR‐spektroskopische Untersuchungen an Äthylenimin‐Metall‐Komplexen

Abstract

Die IR‐Spektren der Äthylenimin‐Metall‐Komplexe der Übergangsmetallionen Cu(III), Mn(II), Co(II), Co(III), Ni(II), Pd(II), Pt(II) und Pt(IV) werden im Bereich von 35–4000 cm−1 angegeben. Man findet, daß sich bei der Komplexbildung die Spannung des Dreirings verringert, woraus die überraschende Beständigkeit des koordinierten Äthylenimins folgt. Die FIR‐Spektren liefern Erwartungsbereiche für die Ω(MN)‐ und Δa(MN)‐Gerüstschwingungen.

Reactions of Cu(i)Br with aziridine derivatives. Synthesis, characterization and crystal structures of monomeric, dimeric and hexameric aziridine (= az) complexes of the formal type [CuBr(az)2]n (n = 1, 2) and [CuBr(az)]6

“…The IR spectra are comparable with those of related aziridine complexes. 26 Compounds 5-7 show the typical absorption bands for the aziridine N-H stretching vibrations in the range of 3231 to 3204 cm -1 . Likewise the n(CH) vibrations between 3084 and 2872 cm -1 and the fingerprint area (1498-757 cm -1 ) of aziridines are observed.…”

Reactivity of 2,2-dimethylaziridine towards d10 transition metal halides

“…2,2-Dimethylaziridine (az) (1) was prepared according to literature methods, distilled from sodium and stored under argon [11,36]. Anhydrous ZnBr 2 , ZnI 2 , CdI 2 , and HgI 2 were used as received from commercial suppliers without purification.…”

“…Hieber and Wiesboeck [10] introduced the aziridine ligand in organometallic chemistry by reacting it with [Co 2 (CO) 8 ] yielding [Co (C 2 H 5 N) 6 ] 2þ [CoðCOÞ À 4 ] 2 . Subsequently, the coordination chemistry of aziridines has been widely explored [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25]. As expected for secondary and tertiary amine ligands, the coordination chemistry of aziridines shows the preference for metal coordination by the N atom.…”

Imines, Cyclic

“…Aziridine Complexes in Which the Aziridine Ring is Intact. Central atoms which have been used for complexes in which the aziridine ring is intact include U (293), Ti (294-296), Zr (296), Cr (288)(289)(290)(291)(292)(293)(294)(295)(296)(297)(298)(299), Mo (299), Wo (299), Mn (298-300), Fe (301), Co (297,298,300,(302)(303)(304), Rh (305,306), Ni (298,300,303,307), Pd (297,298), Pt (297,298,(308)(309)(310), Cu (298,300), Ag (300, 311), Zn (300,311,312), Cd (300,311), and Hg (300). The metals Rh and Pt in low oxidation states form stable and inert aziridine complexes (313,314).…”