• 제목/요약/키워드: chemical binding

검색결과 1,354건 처리시간 0.023초

Anion Receptors with 2-Imidazolidone Molecular Scaffold

  • Kim, Hyung-Il;Kang, Jong-Min
    • Bulletin of the Korean Chemical Society
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    • 제28권9호
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    • pp.1531-1534
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    • 2007
  • Anion receptor based on 2-imidazolidone molecular scaffold has been synthesized. Anion binding studies carried out using 1H NMR and UV?vis spectroscopy revealed that this receptor 6 displays selectivity for the for the oxyanions such as acetate and dihydrogenphosphate ions and the affinity for the anions simply reflects the basicity of anions.

Design and Synthesis of Quipazine Based Re-Complexes for the Development of Potential SPECT Imaging Agents with 99m Tc for 5-HT Transporter

  • In, Mi-Young;Chi, Dae-Yoon;Choi, Sun-Ju;Park, Kyung-Bae;Cho, Cheon Gyu
    • Bulletin of the Korean Chemical Society
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    • 제23권10호
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    • pp.1439-1444
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    • 2002
  • 6-Nitroquipazine has higher binding affinity for SERT than other selective serotonin reuptake inhibitors. We have prepared 6-nitroquipazine based rhenium complexes which would lead to the development of potential SPECT imaging agents with $^{99m}Tc$ for 5-HT transporter.

The Bonding of Interstitial Hydrogen in the NiTi Intermetallic Compound

  • Kang, Dae-Bok
    • Bulletin of the Korean Chemical Society
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    • 제27권12호
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    • pp.2045-2050
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    • 2006
  • The interstitial hydrogen bonding in NiTi solid and its effect on the metal-to-metal bond is investigated by means of the EH tight-binding method. Electronic structures of octahedral clusters $Ti_4Ni_2$ with and without hydrogen in their centers are also calculated using the cluster model. The metal d states that interact with H 1s are mainly metal-metal bonding. The metal-metal bond strength is diminished as the new metal-hydrogen bond is formed. The causes of this bond weakening are analyzed in detail.