Crystal structure of [{Cu(tren)}2(cytosinato)]·(ClO4)3·0.5H2O (tren = tris(2-aminoethyl)amine) and an overview on intra-molecular interligand interactions affecting metal binding sites of cytosine

Md Shahidur Rahman, Md Abdus Salam, Ning Hai Hu, Kazutaka Murayama, Katsuyuki Aoki

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Treatment of cytosine with tris(2-aminoethyl)amine (tren) and Cu(ClO4)2·6H2O under alkaline conditions gave a ternary tren–Cu2+–cytosine complex, [{Cu(tren)}2(cytosinato)]·(ClO4)3·0.5H2O, whose crystal structure was determined by X-ray diffraction. In the structure of the [{Cu(tren)}2(cytosinato)]3+cation, two tren-capped square-pyramidal Cu2+ions bind to a cytosinate anion, one through the deprotonated N(1) of cytosine with the formation of an intra-molecular interligand hydrogen bond between the keto substituent O(2) of the base and the amino group of tren and the other through both the ring nitrogen N(3) and the exocyclic O(2) of the base, forming a four-membered chelate-ring. An overview on metal bonding properties of N(1)-unsubstituted cytosine observed in so far reported crystal structures is given, emphasizing the significance of intra-molecular interligand interaction as a factor that affects metal-binding sites of cytosine.

Original languageEnglish
Pages (from-to)238-243
Number of pages6
JournalInorganica Chimica Acta
Volume452
DOIs
Publication statusPublished - 2016

Keywords

  • Crystal structure
  • Cu
  • Cytosine
  • Intra-molecular interligand interaction
  • Tren

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Crystal structure of [{Cu(tren)}<sub>2</sub>(cytosinato)]·(ClO<sub>4</sub>)<sub>3</sub>·0.5H<sub>2</sub>O (tren = tris(2-aminoethyl)amine) and an overview on intra-molecular interligand interactions affecting metal binding sites of cytosine'. Together they form a unique fingerprint.

  • Cite this