✦ LIBER ✦

Kinetics and mechanism of the photochemical reaction of Octacyanomolybdate (IV) and Diethylenetriamine

✍ Scribed by S. I. Ali; Kowsar Majid; A. M. A. Ansari; Ashutosh Kumar

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 125 KB
Volume: 31
Category: Article
ISSN: 0538-8066
DOI: 10.1002/(sici)1097-4601(1999)31:2<89::aid-kin2>3.0.co;2-m

No coin nor oath required. For personal study only.

✦ Synopsis

Photolysis of [Mo(CN)

8 ] 4Ϫ in the presence of diethylenetriamine (dien) leads to the complexation of ligand via hydrogen in the stoichiometry 2:1. The mechanism of the complexation was investigated by spectroscopy absorption and the rate constants and the quantum yield determined. Rate constants and quantum yields for the formation of the final products were found to depend on pH, ligand, and metal cyanide concentration. The values are a maximum at pH 7.4. At pH Ͼ7.4 the reverse reaction, generating octacyanomolybdate complex from the heptacyano species, is faster. At low pH, the ligand is protonated and less reactive; hence, the rate of reaction and quantum yield values decrease. The ionic strength does not affect the reaction rate, implying an associative mechanism for the photochemical reaction with dien, supported by the rate law. The observed rate law is

📜 SIMILAR VOLUMES

Kinetics and mechanism of the reaction b

Kinetics and mechanism of the reaction between dimethylformamide and chromium(VI)

✍ Zaheer Khan; Kabir-Ud-Din 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 136 KB 👁 2 views

The kinetics of oxidation of N,N-dimethylformamide by chromium(VI) has been studied spectrophotometrically in aqueous perchloric acid media at 20ЊC. The rate showed a first-order dependence on both [Cr(VI)] and [DMF], and increased markedly with increasing [H ϩ ]. The order with respect to [HClO 4 ]

Kinetics and mechanism of the reaction b

Kinetics and mechanism of the reaction between hypochlorous acid and tetrathionate ion

✍ Attila K. Horváth; István Nagypál 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 250 KB 👁 2 views

The reaction has been studied spectrophotometrically monitoring the absorbance in the wavelength range. The spectra of the reactants, intermediates, and prod-240-400 nm ucts in this system are overlapping; thus special programs [1,2] have been used (and tested) to unravel the kinetics and mechanism

Mechanism and Extensibility of the React

Mechanism and Extensibility of the Reaction

✍ Giuseppe Bartoli; M. Cristina Bellucci; Marcella Bosco; Renato Dalpozzo; Antonio 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 241 KB 👁 2 views

Allyl alcohols /

Kinetics and mechanism of the alkali-cat

Kinetics and mechanism of the alkali-catalyzed p-cresol–formaldehyde reaction

✍ H. C. Malhotra; Vinod Kumar 📂 Article 📅 1979 🏛 John Wiley and Sons 🌐 English ⚖ 306 KB 👁 1 views

Kinetics and mechanism of reaction of to

Kinetics and mechanism of reaction of toluidine blue with acidic bromate

✍ S. B. Jonnalagadda; N. Musengiwa 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 209 KB 👁 1 views

The detailed kinetics of the reaction of toluidine blue {phenothiazine-5-ium, 3amino-7(dimethylamino)-2-methyl chloride, tolonium chloride, with potassium bro-ϩ Ϫ TB Cl } mate and with aqueous bromine reaction were studied. In most of the experiments, the kinetics were monitored by following the rat

Kinetics and mechanism of the hydrolysis

Kinetics and mechanism of the hydrolysis of imidacloprid

✍ Zheng, Wei; Liu, Weiping 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 144 KB 👁 2 views

The kinetics of the hydrolysis of imidacloprid were studied at diþ erent pH values and under various temperatures. Imidacloprid was found to be stable in acidic and neutral water, but readily hydrolysed in alkaline water. The main hydrolysis product was found to be 1-[ (6-chloro-3pyridinyl)methyl ]