Molecular Assemblies of Metal Complexes via Base-Pairing of Nucleic Acids in the Crystalline State

Manabu Nakaya, Ryo Ohtani, Kunihisa Sugimoto, Masaaki Nakamura, Leonard F. Lindoy, Shinya Hayami

研究成果: Contribution to journalArticle査読

6 被引用数 (Scopus)

抄録

The nature of the molecular assemblies formed in the crystalline state by cobalt(II) terpyridine (terpy) complexes incorporating appended adenine (A) or thymine (T) bases was found to be controlled by which bases are present. Single-crystals of the cobalt(II) complexes [Co(A-C6-terpy)2](BF4)2 (1) and [Co(T-C6-terpy)2](BF4)2 (2) have needle and block habits, respectively. Subsequent mixing of 1 and 2 in MeOH resulted in isolation of [Co(A-C6-terpy)1.5(T-C6-terpy)0.5](BF4)2 (3) as plate-like crystals. A 3D network structure is present in 1 that incorporates 1D chains, whereas 2 adopts a 2D stacked structure constructed from ladder-type assemblies. For 3, “dimer-rings” consisting of [Co(A-C6-terpy)2]2+ and [Co(A-C6-terpy)(T-C6-terpy)]2+ units are generated by means of base-pairing between A and T. Notably, 3 displays the first crystal structure of a heteroleptic cobalt(II) complex of [Co(A-C6-terpy)(T-C6-terpy)](BF4)2. These assembly differences involving the terpyridine cobalt(II) complex units in 1–3 affect the cooperativities influencing their spin crossover (SCO) behavior. The influence of the terminal nucleobases on the resulting assembly has been probed by investigating the co-crystallization of [Co(terpy)2](BF4)2 (4) with [Co(C6-terpy)2](BF4)2 (5) and 1 with 5.

本文言語英語
ページ(範囲)7232-7237
ページ数6
ジャーナルChemistry - A European Journal
23
30
DOI
出版ステータス出版済み - 5 29 2017
外部発表はい

All Science Journal Classification (ASJC) codes

  • 触媒
  • 有機化学

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