Electronic energy levels in hexahalotellurate(IV) complexes

Abstract

This change is very rapid for the blue isomer, but relatively slow for the purple isomer.) The weight gained in the formation of the yellow complex, which is identical with the weight loss when the yellow complex is dehydrated to re-form the original blue or purple complexes, corresponds to three molecules of water per Ni(II) ion (Caled: 14.11. Found: 13.9). This yellow complex can be tentatively formulated as ( ) 4( 20)2• 2 . It is significant that in the vibrational spectrum of this complex, the water absorptions are more intense and much broader than those observed in the 307 complex formed in ethanol solution, (I)NiCl4(H20)2, which contains two molecules of coordinated water only.Characterization of the Complexes. The complexes prepared were characterized by analysis, visible and infrared spectra (30,000-250 cm-1), and magnetic susceptibility measurements. For details, see ref 15.

Electronic Spectra and Photochemistry of Tin(II), Lead(II), Antimony(III), and Bismuth(III) Bromide Complexes in Solution

“…However, some previous observations indicated that the influence of the-ligands is not negligible. If chloride ligands are replaced by broihide tlhe longest-wavelength absorptions of s 2 complexes are apparently shifted to lower energies [11][12][13][14][15][16]. A systematic study of the absorption as well as the emission spectra of the bromo complexes of Sn 2+ , Pb 2+ , Sb 3+ and Bi 3+ was expected to clarify the role of the ligands.…”

An 129I Mössbauer Study of Novel Polyhalogen Ions Formed by Radioactive Decay in the Tellurium Halides

“…ing the experiments of Couch et al (20), the general conclusion arrived at is that the tellurium employs essentially pure p-orbitals in bonding, the 5s2 electrons being stereochemically nonactive. Thus the T e g -ions are octahedral (21), have relatively long weak Te-X bonds and the 12'Te Mossbauer isomer shifts show a simple trend of increasing positive values (increasing (Y,(0)I2 assuming ARIR is positive) with increasing electronegativity of the ligand.…”

Vibronische Kopplung und dynamisch verzerrte Strukturen in Hexahalogenotelluraten(IV): Ergebnisse aus Tieftemperatur-Röntgenbeugungsuntersuchungen (300—160 K) und aus FTIR-spektroskopischen Experimenten (300—5 K) [1] / Vibronic Coupling and Dynamically Distorted Structures in Hexahalogenotellurates(IV): Low Temperatur X-Ray Diffraction (300—160 K) and FTIR-Spectroscopic (300—5 K) Results [1]

“…So zeigte das TeB r62~-Ion in K2TeBr6 ü berra schend eine regulär oktaedrische Struktur [4]. Diese wurde durch Ram an-Spektroskopie [5], NQR-Spektroskopie [6 ] und E lektronenspektren [7] bestätigt.…”