Gravar-mail: Crystal structure of bis(1,1,1,3,3,3-hexamethyl-disilylamide)bis((4,6- dimethyl-pyridin-2-yl)-[6-(2,4,6-triisopropyl-phenyl)-pyridin-2-yl]- amide)diytterbium(II), {Yb(C27H35N3)[N(Si(CH3)3)]2}2