Journal of the Korean Chemical Society (대한화학회지)

Korean Chemical Society (대한화학회)
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Synthesis and Characterization of Palladium (IV) Complexes with Guanine, Adenine, and Uracil Base

Guanine, Adenine 및 Uracil 염기를 갖는 팔라듐 (IV) 착물의 합성과 그 성질

  • Oh Sang Oh (Department of Chemistry, Kyungpook National University) ;
  • Chung Duck Young (Department of Chemistry, Kyungpook National University) ;
  • Kim Hee Seon (Department of Chemistry, Kyungpook National University)
  • 오상오 (경북대학교 자연과학대학 화학과) ;
  • 정덕영 (경북대학교 자연과학대학 화학과) ;
  • 김희선 (경북대학교 자연과학대학 화학과)
  • Published : 1992.10.20
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Abstract

New Pd(IV) complexes have been prepared through the reactions of $trans-[Pd(en)_2Cl_2](ClO_4)_2 $(en = ethylenediamine) with Guanine, Adenine, or Uracil anion as purine and pyrimidine base. We identified the ratio of central metal versus ligands by $C{\cdot}H{\cdot}N$ elemental analysis and proposed the coordinating site of the base by infrared spectrum, $^1H-NMR,\; and\; ^{13}C$-NMR spectrum. Guanine or Adenine ligand coordinated at N7 site and an en ligand exchanged for $ClO_4^-$ counter ions of the starting material . As these results, the complexes showed the formula $[Pd(en)L_2(ClO_4)_2](ClO_4)_2{\cdot}(en)$, (L = Guanine, Adenine). But in the Uracil complex no exchange of the en ligand and $ClO_4^-$ occured and Uracil anion preferred the N1 to N3 as coordinating site, the complex $[Pd(en)_2(Urac)_2](ClO_4)_2(Urac = Uracil anion).$

$trans-[Pd(en)_2Cl_2](ClO_4)-2$ (en = ethylenediamine)와 purine 염기인 Guanine, Adenine 또는 pyrimidine 염기인 Uracil anion을 반응시켜 새로운 팔라듐(IV) 착물을 얻었다. 착물의 중심금속과 각 리간드의 조성비는 $C{\cdot}H{\cdot}N$ 원소 분석으로써 확인하였으며 리간드의 배위자리 등 착물의 구조는 적외선 흡수 스펙트럼 및 $^1H-NMR,\; ^{13}C-NMR$로써 조사하였다. Guanine 또는 Adenine 착물을 purine계 염기가 N7 자리에 배위되었고 출발물질로부터 하나의 en 리간드가 이탈하고 두 $ClO_4^-$가 배위된 $[Pd(en)L_2(ClO_4)_2](ClO_4)_2{\cdot}(en)$ (L = Guanine, Adenine) 구조이다. Uracil 착물은 en과 $ClO_4^-$의 이동없이 Uracil anion의 N1 자리가 배위된 $[Pd(en)_2(Urac)_2](ClO_4)_2$ (Urac = Uracil anion) 구조의 착물로 추정되었다.

Keywords

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