摘要
Ⅰ. INTRODUCTIONThe chemistry of transition metal dinitrogen complexes is undoubtedly an important component part of biological nitrogen fixation and its chemical simulation. Up to now a lot of stable transition metal dinitrogen complexes have been prepared, but only a few of them could produce NH3 by protonation. This reaction, however, is chemically stoichiometrie. On the other hand, we know that the formation of NH3 of (cis-（W（N2）2（PMe2Ph）4） by protonation under certain conditions is as high as 90%. So we believe that if certain species capable of acting both as hydrogen source
