Biradical with the "non-linear" diacetylene fragment

作者：Tolstikov S E; Tretyakov E V; Romanenko G V; Stass D V; Bogomyakov A S; Sagdeev R Z; Ovcharenkoa V I^*

来源：Russian Chemical Bulletin, 2008, 57(2): 394-399.

DOI：10.1007/s11172-008-0060-5

• free radicals
• nitronyl nitroxides
• diacetylenes
• pyrazoles
• X-ray diffraction study
• magnetic properties

The nitronyl nitroxide biradical, 2,2'-[1,1'-(hexa-2,4-diyne-1,6-diyl)bis(1H-pyrazole-4,1-diyl)]bis(4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazole 3-oxide 1-oxyl), was synthesized. The structure and magnetic properties of the biradical were studied. In the solid state, this nitroxide contains the nonlinear C(S)-C equivalent to C-Ca equivalent to C-C(S) fragment. The C(S)-Ca equivalent to C and C equivalent to C-Ca equivalent to angles are 172.4(5) and 171.1(3)A degrees, respectively.

• 出版日期2008-2