Ryutaro Tsuchida

Rotatory Dispersion of Metallic Co-ordination Compounds. II. Absorption Spectra and Rotatory Dispersion of Cobalt(III) Complexes of EDTA

The rotatory dispersion measurements have been made for D-Na2[Co(edta)NO2]·3H2O, D-K[Co(edta)]·3H2O, D-K2[Co(edta)Cl]·3H2O and D-cis-[Co en2(NO2)2] I. On the basis of these measurements, the relation of the splitting of the first absorption band with the so-called anomalous rotatory dispersion has been discussed. In the anomalous rotatory dispersion of D-[Co(edta)NO2]2−, there appear two inver-sive dispersions due to the component absorption, Ia and Ib, of the split first absorption band. Similarly considered, it has been shown that the first absorption band of [Co(edta)]− or [Co(edta)Cl]2− may have two component absorptions in accordance with the behavior of its rotatory dispersion curve.

A Fine Structure in Absorption Spectrum of Tricesium Cobaltous Pentachloride in Crystalline State

Under these conditions the CUAC2 is regenerated and functions as a true homogeneous catalyst. No reduction of CUAC2 was observed until all the Cr207had reacted. This reaction is kinetically similar to that between CUAC2 and H 2. For both reactions the rate at which hydrogen is consumed is represented by Eq. (2). This is to be expected since the rate controlling step is the same in each case. Support of this work through a grant from the National Research Council of Canada is gratefully acknowledged.

Asymmetric Adsorption of Complex Salts on Quartz. II

數種のコバルト錯鹽及び有機物に就き水晶の粉末を吸着劑として不齊選繹吸着實驗を行つた結果,金屬錯鹽の吸着能はその立體配置に依つて左右されることを認めた.從つて斯る吸着法を立體配置決定の一手段として用ることを知った.

Absorption Bands of Metallic Comp_??_exes. XII

KCr(SO4)2・12H2O, [Cr(H2O)6]Cl3, [Co(NH3)4H2OCl(1) (2)]SO4, [Co(NH3)6]Cl3等の溶液及び結晶の吸收を測定した.クロム明礬の水溶液及び結晶に於る第三吸收帶, [Co(NH3)4H2OCl]SO4及び[Co(NH3)6]Cl3の結晶に於る第三吸收帶は配位子の解離に基因する.クロム明礬結晶の低温に於る變色及び[Cr(H2O)6]Cl3溶液の温度に依る吸收變化は配位子解離の強弱に因る.配位子解離と複圏錯鹽生成機構との關係を論じた.

Absorption Spectra of Solid Substances

固體吸收スペクトルの測定方法として,單一結晶法,顯微鏡法,及び反射法の三種を述べ,それぞれ,大なる結晶の得られる場合,微細結晶のみ得られる場合,及び無定形な状態でしか得られぬ場合,に應じて適用し得られることを示し,實験例として,クローム明礬, [Co(NH3)4Cl2(1)(2)]Cl, [Co(NH3)4CO3]Cl, [Co(NH3)4CO3]NO31/2H2O, [Co(NH3)4CO3]2SO43H2O, ZnS, C4〓S, HgS (辰砂)の吸收曲線を報告せり.

Absorption Bands of Metallic Complexes V

1) 一價二價の轉移元素イオンを中心とする錯鹽K[Ag(CN)2], K3[Cu(CN)4], K2[Zn(CN)4]及びK2[HgI4]に於ては第一吸收帶の無きことを確めた.2) 第一吸收帶の起因は不飽和遷移殻の電子の轉移にあることの證左として,錯基の中心金屬イオンが遷移元素であつてもそのイオンが擬稀瓦斯構造なる時は第一吸收帶は現はれぬことを明らかにした.3) 錯鹽水溶液の吸收スペクトル測定に於て,空氣中の酸素による影響を顧慮し窒素氣流中にて溶液を調製をなすための特別の装置を案出した.