Structures of 1-ferrocenyl-1-phenylethanol, ferrocenyl(diphenyl)methanol and ferrocene-1,1'-diylbis(diphenylmethanol)

摘要

Racemic 1-ferrocenyl- 1-phenylethanol, [(CsHs)Fe-\ud(CsHa)]CPhMeOH (I), crystallizes as discrete molecules\udwhich are not involved in hydrogen bondinog; the shortest\udintermolecular O-..O contact is 3.768(3) A and the hydroxyl\udH atom is orientated towards the unsubstituted cyclopentadienyl ring. Ferrocenyl(diphenyl)methanol,\ud[(CsHs)Fe(CsHa)]CPh2OH (II) is hydrogen bonded to\udform centrosynunetric dimers with O...O 2.816(1) and\udH...O 2.52 ]k. Ferrocene-l,l~-diylbis(diphenylmeth -\udanol), Fe[(CsHa)C(Ph)2COH]2 (III) crystallizes as a\uddimeric aggregate with the Fe atoms on twofold crystallographic symmetry axes and the four O atoms defining a folded trapezium with O...O 2.762(2), 2.714(2)\udand 2.865(2) A,. The four hydroxyl groups are disordered\udequally over two orientations such that there are two halfoccupancy H-atom sites between each hydrogen-bonded\udoxygen pair.