The crystal structure of [Ni(TAAB)(py)_2](BF_4)_2,where TAAB is the tetradentate macrocyclic ligand tetrabenzo[b,f,j,n] [1,5,9,13] tetraazacyclohexadecine,has been determined from X-ray diffraction analysis.The crys. ...The crystal structure of [Ni(TAAB)(py)_2](BF_4)_2,where TAAB is the tetradentate macrocyclic ligand tetrabenzo[b,f,j,n] [1,5,9,13] tetraazacyclohexadecine,has been determined from X-ray diffraction analysis.The crys. tai beiongs to monoclinic,space group P2_1/n with cell parameters a=16.465(6),b =12.486(5),e=20.219(1),β=113.79°, V=3803.9~3,Z=4,De=1.402 g/cm^3,F(000)=1640,The molecule has approximately S_4 symmetry.TAAB macrocyelic ligand presents a decidedly saddle-shaped appearance.Planes pyridine molecules are perpendicular to each other and the nickle(II)ion has coordination geometry.The final R and Rw are 0.068 and 0.070,respectively.展开更多
文摘The crystal structure of [Ni(TAAB)(py)_2](BF_4)_2,where TAAB is the tetradentate macrocyclic ligand tetrabenzo[b,f,j,n] [1,5,9,13] tetraazacyclohexadecine,has been determined from X-ray diffraction analysis.The crys. tai beiongs to monoclinic,space group P2_1/n with cell parameters a=16.465(6),b =12.486(5),e=20.219(1),β=113.79°, V=3803.9~3,Z=4,De=1.402 g/cm^3,F(000)=1640,The molecule has approximately S_4 symmetry.TAAB macrocyelic ligand presents a decidedly saddle-shaped appearance.Planes pyridine molecules are perpendicular to each other and the nickle(II)ion has coordination geometry.The final R and Rw are 0.068 and 0.070,respectively.
