Two new mononuclear Mn ￡"complexes Mn ￡¨phen￡(c)￡2￡¨N￡3￡(c)￡2￡¨￡±￡(c)andMn ￡¨phen￡(c)￡2￡¨N￡3￡(c)￡¨H￡2O￡(c)ClO4·H2 O￡¨￡2￡(c)have been synthesized and structura lly characterized,where phen is ￡±￡?￡±￡°￡-phenanthroline￡(r)Complex1crystallizes in theP1pace group,with lattice parameters a￡1/2￡?￡(r)￡±￡?￡?￡?￡¨￡2￡(c)|!￡?b￡1/2￡±￡±￡(r)￡±￡2￡±￡?￡¨￡2￡(c)|!￡?c￡1/2￡±￡2￡(r)6￡?￡?￡±￡¨￡2￡(c)|!￡?|á￡1/2￡?￡3￡(r)￡μ￡μ￡?￡¨￡3￡(c)??￡?|?￡1/2￡?￡2￡(r)28￡*￡¨￡3￡(c)??￡?|?￡1/2￡*￡3￡(r)6￡¨￡3￡(c)??￡?V￡1/2￡±￡°￡1￡2￡(r)￡*￡¨￡′￡(c)|!￡3￡?Dc￡1/2￡±￡(r)￡μ￡±￡?Mg ?¤m￡-￡3￡?Z ￡1/22,F(000￡(c)￡1/2￡μ￡±￡°￡?R￡±￡1/2￡°￡(r)￡°￡?￡2￡°￡?w R￡2￡1/2￡°￡(r)0958(based on F￡2 ￡(c)￡?S￡1/2￡°￡(r)￡1￡?￡±￡(r)Complex2crystallizes in theP1space group,with lattice parameters a￡1/2￡?￡(r)￡?￡μ￡′￡3￡¨￡2￡(c)|!￡?b￡1/2￡?￡(r)￡1￡*￡?￡*￡¨￡2￡(c)|!￡?c￡1/2￡±￡*￡(r)5915￡¨￡′￡(c)|!￡?|á￡1/2￡1￡3￡(r)￡3￡1￡1￡¨￡3￡(c)??￡?|?￡1/2￡±￡°￡2￡(r)￡?￡°￡?￡¨￡3￡(c)??￡?|?￡1/2￡±￡°￡?￡(r)23￡′￡¨￡3￡(c)??￡?V￡1/2￡±￡2￡?￡?￡(r)￡*￡¨￡′￡(c)? ￡3 ￡?Dc￡1/2￡±￡(r)￡μ￡μ￡2Mg ?¤m￡-￡3￡?Z ￡1/2￡2￡?F￡¨￡°￡°￡°￡(c)￡1/2606,R!? ￡1/2￡°￡(r)067￡2￡?w R ￡2 ￡1/2￡°￡(r)1781(based on F2 ￡(c)￡?S￡1/2￡±￡(r)￡°￡′￡*￡(r)In complex1,the Mn atom is coordinated by six nit rogen atoms of two phen molecules and two N 3- ions with the Mn￡-N distances ranging from ￡2￡(r)￡±￡′￡2￡¨￡′￡(c)to ￡2￡(r)318(4￡(c)|!￡(r)The coordinated phen molecules of the adjacent Mn ￡¨phen￡(c) ￡2 ￡¨N ￡3 ￡(c) 2 moieties experienceπ-πstacking which is responsible for th e crystal pack
