Unusual potentiometric titration curves of 2,8-dimercapto-6-hydroxypurine and 4,4-dimethyloxazolidine-2-thione with iodine

被引：0

作者：

Ciesielski, W ^{[1
]}

Krenc, A ^{[1
]}

机构：

[1] Univ Lodz, Dept Instrumental Anal, PL-90236 Lodz, Poland

来源：

CHEMIA ANALITYCZNA | 2003年 / 48卷 / 06期

关键词：

2,8-dimercapto-6-hydroxypurine; 4,4-dimethyloxazolidine-2-thione; potentiometric titration; iodimetric determination;

D O I：

暂无

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Iodimetric volumetric titration with potentiometric detection of the end-point has been performed in order to determine 2,8-dimereapto-6-hydroxypurine and 4,4-dimethyloxazolidine-2-thione in strongly alkaline medium. Determination range found was 100-500 mumol for 2,8-dimercapto-6-hydroxypurine and 50-1000 mumol for 4,4-dimethyloxazolidine-2-thione. The errors and the relative standard deviations were below 1 %. The shapes of the obtained potentiometric titration curves depended on the concentrations of sodium hydroxide and the analytes, the material of the working electrode (platinum, gold) and its surface. Addition of iodine resulted in a significant potential drop. The studied systems did not exhibit Nernstian behaviour.

引用

页码：939 / 946

页数：8

共 24 条

[1] An improved process for the preparation of 4,4-dimethyloxazolidine-2-thione
Tewari, Neera
Nair, Dinesh
Nizar, Hashim
Rai, Bishwa Prakash
Prasad, Mohan
ORGANIC PROCESS RESEARCH & DEVELOPMENT, 2007, 11 (03) : 466 - 467
[2] A comparative study of the corrosion inhibition of mild steel in sulphuric acid by 4,4-dimethyloxazolidine-2-thione
Musa, Ahmed Y.
Kadhum, Abdul Amir H.
Mohamad, Abu Bakar
Daud, Abdul Razak
Takriff, Mohd Sobri
Kamarudin, Sid Kartom
CORROSION SCIENCE, 2009, 51 (10) : 2393 - 2399
[3] Crystal structure of 4,4-dimethyloxazolidine-2-thione, C5H9NOS
Gray, T
Laplaza, CE
Staples, RJ
ZEITSCHRIFT FUR KRISTALLOGRAPHIE-NEW CRYSTAL STRUCTURES, 1999, 214 (02): : 230 - 230
[4] Electrochemical and quantum chemical calculations on 4,4-dimethyloxazolidine-2-thione as inhibitor for mild steel corrosion in hydrochloric acid
Musa, Ahmed Y.
Kadhum, Abdul Amir H.
Mohamad, Abu Bakar
Rahoma, Abdalhamid Ahmad B.
Mesmari, Hussein
JOURNAL OF MOLECULAR STRUCTURE, 2010, 969 (1-3) : 233 - 237
[5] 4,4′,6,6′-Tetrabromo-2,2′-(2,8-diazonia-5-azanona-1,8-diene-1,9-diyl)diphenolate
Chen, Zhu-Jun
Lei, Ke-Wei
ACTA CRYSTALLOGRAPHICA SECTION E-STRUCTURE REPORTS ONLINE, 2008, 64 : O2450 - U3415
[6] CORRELATION BETWEEN A SHAPE OF POTENTIOMETRIC TITRATION CURVES, IONIZATION CONSTANTS AND STEREOCHEMISTRY OF 4-CYCLOHEXENE-1, 2-DACARBOXYLIC ACIDS
SALAKHOV, MS
ISRAFILO.AI
SHAMILOV, TO
GUSEINOV, MM
KUCHEROV, VF
ZHURNAL ORGANICHESKOI KHIMII, 1973, 9 (01): : 213 - 213
[7] UNUSUAL STRUCTURE-RELATED MAGNETISM IN THE ORGANIC CONDUCTOR TSF(NI(DMIT)2)3 (TETRASELENAFULVALENIUM-TRI-(BIS-(4,5-DIMERCAPTO-1,3-DITHIOLE-2-THIONE)NICKEL)-ATE)
JOHANNSEN, I
BECHGAARD, K
RINDORF, G
THORUP, N
JACOBSEN, CS
MORTENSEN, K
SYNTHETIC METALS, 1986, 15 (04) : 333 - 343
[8] KETENE .22. A[4+2] ADDUCT OF CYCLOHEPTATRIENE AND DIPHENYLKETENE - CRYSTAL-STRUCTURE OF 4,4-DIPHENYLBICYCLO[3.2.2]NONA-2,8-DIEN-6-ONE
FALSHAW, CP
LAKOUES, A
TAYLOR, GA
JOURNAL OF CHEMICAL RESEARCH-S, 1985, (04): : 106 - 106
[9] Separation of linkage isomers of trithiocyanato (4,4',4"-tricarboxy-2,2',6,2"-terpyridine)ruthenium(II) by pH-titration method and their application in nanocrystalline TiO2-based solar cells
Nazeeruddin, MK
Grätzel, M
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2001, 145 (1-2) : 79 - 86
[10] Unusual aryl-aryl coupling of 6-bromo-1,2-naphthoquinone to 6,6′-dibromo-1,1′,2,2′-tetrahydroxy-4,4′-binaphthyl in the presence of trialkylphosphine and water
Bogdanov, Andrei V.
Khasiyatullina, Nadezhda R.
Mironov, Vladimir F.
Krivolapov, Dmitry B.
Litvinov, Igor A.
Konovalov, Alexander I.
MENDELEEV COMMUNICATIONS, 2009, 19 (01) : 39 - 41

← 1 2 3 →