Farbe und Konstitution von Komplexverbindungen der Übergangselemente

Abstract

Nach einem Überblick über ältere Deutungsversuche werden Ergebnisse quantentheoretischer Betrachtungen am Beispiel der Cr3+‐Komplexe dargestellt. Bekannte Spektren zwei‐ und dreiwertiger lonen werden vom Standpunkt der Theorie aus gedeutet. Die Komplexbildungstendenz läßt sich durch Erweiterungen der elementaren elektrostatischen Theorie verstehen.

The Chemistry of Oxovanadium(IV)

“…They are mainly of two types: M2[VO(ox)2](xH20) and M¡r (360). The electronic spectrum of this latter ion has been recorded several times (146,163,185), and there is some support (390) for the two species VO(Hox)2 and VO(Hox)+. A compound with the unusual empirical formula VO (ox) (H2ox) (3H20) has been prepared ( 332), but nothing is known of its structure.…”

“…The thermal decomposition of these oxalates in vacuo yields V203 as final product (322). Oxalato complexes form very readily and have been prepared and studied many times (94,163,204,221,310,322,332,357,384,387,390). They are mainly of two types: M2[VO(ox)2](xH20) and M¡r (360).…”

Light Absorption Spectrometry

“…The absorption spectra of the chelates formed by cobalt, nickel, copper, palladium, and iron with 8-quinolinol, salicylaldehyde, salicylaldoxime, salicylaldimine, and dimethyl-and diphenylglyoxime have been determined (597). The quantum mechanical theory of light absorption has been used in relating the color and constitution of complex ions (227). The anomalous bands due to chromophores and the relationship between stability of the complex and the shift in absorption spectra have been studied.…”

Luminescence of cerium(III) inter-shell transitions and scintillator action

“…This opinion was growing up within a few years, and even H. Hartmann and H.L. Schl~ifer [21] gave in 1954 the "coup de grace" by finding that the aqua ions have lower A than the ammonia complexes of, e.g., chromium(III), cobalt(III) and rhodium(III) have higher A than any known anion complexes of these d group Werner-S.M. Jorgensen complexes (this was later confirmed for fluoride ligation).…”