SYNTHESIS OF 6-(2-NAPHTHYL)-2,3-DIHYDRO-AS-TRIAZINE-3THIONE AS A SENSITIVE REAGENT FOR THE SPECTROPHOTOMETRIC DETERMINATION OF CU (II)

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SHAMSA FAZEL; BARAZANDEH TEHRANI M.

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Journal: DARU Journal of Pharmaceutical Sciences Year:2004 | Volume:12 | Issue:2 Page(s): 76-80

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Title

SYNTHESIS OF 6-(2-NAPHTHYL)-2,3-DIHYDRO-AS-TRIAZINE-3THIONE AS A SENSITIVE REAGENT FOR THE SPECTROPHOTOMETRIC DETERMINATION OF CU (II)

Author(s)

SHAMSA FAZEL | BARAZANDEH TEHRANI M. | Issue Writer Certificate

Keywords

6-(2-NAPHTHYL)-2

3-DIHYDRO-AS-TRIAZINE-3-THIONE; CU (II); SPECTROPHOTOMETRIC ANALYSIS; CU(II)-6-(2-NAPHTHYL)-2

3-DIHYDRO-AS-TRIAZINE-3-THIONE COMPLEX.

Abstract

A Spectrophotometric method for determination of Cu (II) based on the complex formation with a new reagent 6-(2-naphthyl)-2,3-dihydro-as-triazine-3-thione(NDTT) is described. NDTT was synthesized based on the knowledge available for the preparation of 6-phenyl-2,3-dihydro-as-triazine-3-thione (PDTT). Reaction of 2-acetylnaphthalene 1 with amyl nitrite gave 2-naphthylglyoxal aldoxime 2, which upon reaction with thiosemicarbazide yielded 6-(2-naphthyl)-2,3-dihydro-as-triazine-3-thione (NDTT) 3. NDTT produces a red complex with copper which is easily extractable with chloroform at pH>8 while the reagent is not extracted under these conditions. The absorption of the complex in the UV region (313 nm) is about 7 times greater than in the visible region (508 nm). The mole ratio of the complex which is formed between Cu (II) and NDTT is 2:3, which was calculated by both the mole ratio and the continuous variation methods. The absorbance of the complex obeys Beer"s law in the concentration range of 0.08-2 m#g Cu(II)/ml chloroform with r = 0.998 and detection limit of 13 ng/ml. This procedure can be carried out in the presence of many cations and anions in the presence or absence of the masking agents.

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APA: Copy

SHAMSA, FAZEL, & BARAZANDEH TEHRANI, M.. (2004). SYNTHESIS OF 6-(2-NAPHTHYL)-2,3-DIHYDRO-AS-TRIAZINE-3THIONE AS A SENSITIVE REAGENT FOR THE SPECTROPHOTOMETRIC DETERMINATION OF CU (II). DARU JOURNAL OF PHARMACEUTICAL SCIENCE, 12(2), 76-80. SID. https://sid.ir/paper/275212/en

Vancouver: Copy

SHAMSA FAZEL, BARAZANDEH TEHRANI M.. SYNTHESIS OF 6-(2-NAPHTHYL)-2,3-DIHYDRO-AS-TRIAZINE-3THIONE AS A SENSITIVE REAGENT FOR THE SPECTROPHOTOMETRIC DETERMINATION OF CU (II). DARU JOURNAL OF PHARMACEUTICAL SCIENCE[Internet]. 2004;12(2):76-80. Available from: https://sid.ir/paper/275212/en

IEEE: Copy

FAZEL SHAMSA, and M. BARAZANDEH TEHRANI, “SYNTHESIS OF 6-(2-NAPHTHYL)-2,3-DIHYDRO-AS-TRIAZINE-3THIONE AS A SENSITIVE REAGENT FOR THE SPECTROPHOTOMETRIC DETERMINATION OF CU (II),” DARU JOURNAL OF PHARMACEUTICAL SCIENCE, vol. 12, no. 2, pp. 76–80, 2004, [Online]. Available: https://sid.ir/paper/275212/en

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