Absorption spectrometric study of molybdogermanic acid. Determination of germanium

Abstract

able number of points are already available within this range. This of course does not mean that points outside these limits are valueless for other purposes; they can be very useful, for example, in characterizing a situation with strong deviations from linearity.

Crystal structure of bis(tetra-n-butylammonium)dodecamolybdosulfate(VI)-(2–), [NBun4]2[SMo12O40]

“…One gram of the salt prepared by either method was dissolved in Me,CO (100 cm3) at ambient temperature and the solution concentrated by spontaneous evaporation in a chemical hood. After 3 d, when the solution volume had been reduced to approximately 60 cm3, octahedral, lemon-yellow crystals appeared and grew to sizes of 0.2-0.5 mm in diameter until the mother-liquor started to change to orange-yellow.$ The crystals were collected by decantation and dried in the open air (Found: C, 16.80; H, 3.25; Mo, 49.…”

A spectrophotometric study of the complex formation between cobalt(III) and trans-1,2-cyclohexanedinitrilotetraacetic acid (CyDTA)

“…The spectral data showed only that the known 1 : I complex was f~r m e d .~ These sets of data indicate, then, that more than one stable complex is being formed between Co(II1) and CyDTA. Jakubiec and Boltz (8) observed similar data in a mole ratio determination of molybdate complexes with germanium, and Cheng and Goydish (9) reported absorbance minima in a Job's plot for palladium and mercury complexes with thio-Micheler's reagent. We believe that this is the first report of a higher order complex of a metal ion with a polyaminopolycarboxylic acid.…”

Determination of germanium, vanadium, and titanium by carbon furnace atomic absorption spectrometry

“…Germanium was determined by flame AAS after extraction from 8 M hydrochloric acid into n-butyl ether (7). Germanium was indirectly determined as molybdogermanic acid by flame AAS (8). Atomic absorption spectrometry of germanium with a tungsten electrothermal atomizer was described (9).…”