Triamino-s-triazine Triradical Trications. An Experimental Study of Triazine as a Magnetic Coupling Unit
摘要:
Triamino-s-triazine derivatives 3a, 4, and 5 have been prepared, and their cationic states have been analyzed electrochemically. At 298 K, 3a(+) has a limited lifetime in CH2CI2 solution, However, 4(+) and 5(+) are long lived under such conditions, and quartet states of 4(3+) and 5(3+) are observed by ESR spectroscopy, Variable temperature ESR analysis and NMR shift susceptibility measurements indicate that 5(3+) is a doublet ground state with a populated quartet state.
Triamino-s-triazine Triradical Trications. An Experimental Study of Triazine as a Magnetic Coupling Unit
摘要:
Triamino-s-triazine derivatives 3a, 4, and 5 have been prepared, and their cationic states have been analyzed electrochemically. At 298 K, 3a(+) has a limited lifetime in CH2CI2 solution, However, 4(+) and 5(+) are long lived under such conditions, and quartet states of 4(3+) and 5(3+) are observed by ESR spectroscopy, Variable temperature ESR analysis and NMR shift susceptibility measurements indicate that 5(3+) is a doublet ground state with a populated quartet state.
Triamino-<i>s</i>-triazine Triradical Trications. An Experimental Study of Triazine as a Magnetic Coupling Unit
作者:Trent D. Selby、Kurt R. Stickley、Silas C. Blackstock
DOI:10.1021/ol9912736
日期:2000.1.1
Triamino-s-triazine derivatives 3a, 4, and 5 have been prepared, and their cationic states have been analyzed electrochemically. At 298 K, 3a(+) has a limited lifetime in CH2CI2 solution, However, 4(+) and 5(+) are long lived under such conditions, and quartet states of 4(3+) and 5(3+) are observed by ESR spectroscopy, Variable temperature ESR analysis and NMR shift susceptibility measurements indicate that 5(3+) is a doublet ground state with a populated quartet state.