CCCXCVII.—The complex cyanides of molybdenum

Acid–base and electrochemical properties of manganese meso(ortho- and meta-N-ethylpyridyl)porphyrins: potentiometric, spectrophotometric and spectroelectrochemical study of protolytic and redox equilibria

“…14, 15 Mn II Ps were prepared by the reduction of Mn III Ps with ascorbic acid (Fluka), whereas the oxidation of Mn III Ps was performed by K 3 [Mo(CN) 8 ] prepared according to published procedure 16, 17 immediately before the experimental measurements. An equimolar solution of octacyanomolybdate(V/IV) was prepared by oxidation of K 4 [Mo(CN) 8 ] with KMnO 4 in perchloric acid and the formed Mn 2+ (aq) was quantitatively removed by filtration of precipitated Mn(OH) 2 formed upon the addition of 0.1 M NaOH.…”

The electronic structure and spectra of octacyanide complexes

“…The hydroxy-cyanide complex K4Mo(CN)4 (OH)4 , 4H~O was prepared as described by Bucknall and Wardlaw [5], although Steele [7] has described difficulties using this method. A solution of MoO3 in 3 N aqueous HC1 was reduced electrolytically and the quinquevalent molybdenum hydroxide precipitated by addition of KOH.…”

“…Crystalline K4Mo(CN)s was prepared as described elsewhere [4] and Ag3Mo(CN)s was prepared from it by oxidation with permanganate [5] followed by precipitation with silver nitrate. Treatment of the brick-red solid with dilute aqueous potassium chloride gave a solution of K3Mo(CN)s.…”

Laser flash photolysis study of the charge-transfer photochemistry of octacyanomolybdate(V) and octacyanotungstate(V) ions

“…Materials.-The preparations of solid K,[W(CN),]*l .5H,O and H,[W(CN),] in solution have been described previously.2*' A solution of K,[Mo(CN),] was obtained by the literature method. 12 The purity of the complexes was checked spectrophotometrically (i.r. and/or u.v.-visible spectra).…”