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with -?N-NH as SC is the lowest. Key words: heterocycle; ferromagnetic coupling unit; biradical molecule 1 Introduction The design and the synthesis of organic molecules with very high-spin ground states..., the compounds that the ferromagnetic interaction between metals and radicals were brought were found [9, 10], the metal ion was connected with radicals through heterocycle. We will make computational studies......
heterocycle in pre-oxidized PAN fibers, and the movement of magnetic units resulted in changes of orientation structure of pre-oxidized PAN fibers in high magnetic fields. Overall orientation increased with increase of magnetic field intensity and extension of processing time, whereas change of crystalline orientation depended on magnetic field intensity and content of carbon-nitrogen heterocycle......
410083, China) Abstract: In order to find high active pesticide containing heterocycle, six novel terephthaloyl bisthioureas(Ⅲa-f) containing 1, 3, 4-thiodiazole were synthesized by the reaction......
. The results indicate that, during pyrolysis of furfural-acetone resin adding 7% (mass fraction) phosphorous acid as curing agent, the rupture of C-O bond in the five-membered heterocycle firstly takes... of the furan resin molecule is furan five-membered heterocycle containing carbon, hydrogen and oxygen elements. Because in the heteroatom of furan ring, such as oxygen, unpaired electrons can participate......
occurs. Diketone is oxidized unceasingly to respectively form (1), (2) and (3). Where (1) is the rearrangement product of broken double bond. And N,O heterocycle is unstable group which can be oxidized......