Oxidative addition of dihydrogen to (eta6-arene)Mo(PMe3)3 complexes: origin of the naphthalene and anthracene effects

Guang Zhu; Kevin E Janak; Joshua S Figueroa; Gerard Parkin

doi:10.1021/ja058107f

Oxidative addition of dihydrogen to (eta6-arene)Mo(PMe3)3 complexes: origin of the naphthalene and anthracene effects

J Am Chem Soc. 2006 Apr 26;128(16):5452-61. doi: 10.1021/ja058107f.

Authors

Guang Zhu¹, Kevin E Janak, Joshua S Figueroa, Gerard Parkin

Affiliation

¹ Department of Chemistry, Columbia University, New York, New York 10027, USA.

PMID: 16620117
DOI: 10.1021/ja058107f

Abstract

In contrast to the benzene and naphthalene compounds (eta(6)-PhH)Mo(PMe(3))(3) and (eta(6)-NpH)Mo(PMe(3))(3), the anthracene complex (eta(6)-AnH)Mo(PMe(3))(3) reacts with H(2) to undergo a haptotropic shift and give the eta(4)-anthracene compound (eta(4)-AnH)Mo(PMe(3))(3)H(2). Density functional theory calculations indicate that the increased facility of naphthalene and anthracene to adopt eta(4)-coordination modes compared to that of benzene is a consequence of the fact that the Mo-(eta(4)-ArH) bonding interaction increases in the sequence benzene < naphthalene < anthracene, while the Mo-(eta(6)-ArH) bonding interaction follows the sequence benzene > naphthalene approximately anthracene.