A bent ‘barocene’ based on metallated 2-pyridylphenylmethane: [Ba{η5-PhCH(C5H4N-2)}2{MeO(CH2)2O(CH2)2OMe}(thf)]
Abstract
Reaction of barium metal with 2-pyridylphenylmethane in liquid ammonia, thf and diglyme at –50 °C then ca. 70 °C yields the metallated bent ‘open metallocene’ with the metal centre bound in an η5 manner to the ipso-C, adjacent C-centres and nearest N, C centres, a tridentate diglyme and a thf molecule [Ba–C, N 2.983(6)–3.303(6)Å, Ba–O 2.766(4)–2.855(4)Å determined at –100 °C].