Pengaruh pH terhadap pembentukan senyawa kompleks tembaga (II) Gunanin

Nugraheni , Febriana Dian (2005) Pengaruh pH terhadap pembentukan senyawa kompleks tembaga (II) Gunanin. Undergraduate thesis, FMIPA UNDIP.

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Abstract

Ion tembaga memiliki konfigurasi elektron yang memungkinkan sebagai ion pusat suatu senyawa kompleks, seperti kompleks tembaga(II)guanin. Pengompleksan tembaga dengan guanin perlu dikaji karena guanin dalam sistem tubuh terlibat dalam proses katabolisme purin. Telah dilakukan penelitian tentang reaksi pengompleksan antara kation Cu dengan guanin. Kemampuan guanin dalam mengikat Cu2+ sangat dipengaruhi oleh kemampuan deprotonasi guanin dalam kondisi keasaman larutan yang berbeda. Senyawa kompleks tembaga(II)guanin dihasilkan dengan cara memvariasi pH reaksi pengompleksan pada 4, 5, 6, 7, 8, 9, 10, 11 dan 12. Senyawa kompleks yang terbentuk diekstrak dengan kloroform. Karakterisasi kompleks ditunjukkan secara kualitatif dengan cara menganalisis spektra inframerah dan spektra ultraviolet. Uji kuantitatif ditempuh dengan menggunakan spektrometer serapan atom. Hasil penelitian menunjukkan dekonsentrasi maksimal kation Cu2+ oleh ligan guanin diperoleh pada pH = 11 sebesar 73,3 %. Tembaga berikatan dengan guanin membentuk kompleks khelat melalui N3 dan N9. Hal ini diperkuat oleh spektra ultraviolet dan spektra inframerah yang diperoleh. Copper ion has an electron configuration that enable as center ion of complex compounds such as copper(I1)guanine. Complexation of copper(11)guanine is necessary to be learnt due to the fact that guanine is involved in purine catabolism process in human body system. The research of complex formation between Cue} and guanine had been studied. Deprotonation of guanine influenced the interaction between Cu2+ and guanine. Complex compounds of copper(II)guanine were formed by varying pH at 4, 5, 6, 7, 8, 9, 10, 11 and 12. Complex compound formed was extracted using chloroform. The complex characterizations were perfomed via a qualitative test by analysing their infrared and ultraviolet spectra and quantitative test using atomic absorption spectrophotometer. Result of the research showed the maximum deconsentration of Cu2+ by guanine was obtained at pH of 11 around 73,3 %. Copper interacted with guanine forms a chelate complex through N3 and N9 amina and it was supported by ultraviolet and infrared spectra of the complexes.

Item Type:Thesis (Undergraduate)
Subjects:Q Science > QD Chemistry
Divisions:Faculty of Science and Mathematics > Department of Chemistry
ID Code:31069
Deposited By:Mr UPT Perpus 1
Deposited On:14 Nov 2011 10:40
Last Modified:14 Nov 2011 10:40

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