Molybdenum complexes containing substituted cyclopenta[l]phenanthrenyl ligand

0022-328X/$ see front matter 2009 Elsevier B.V. doi:10.1016/j.jorganchem.2009.11.043 * Corresponding authors. Address: Department of G istry, Faculty of Chemical Technology, University of 573, 532 10 Pardubice, Czech Republic (J. Honzíček). Romão), fax: +420 46603 7068 (J. Honzíček). E-mail addresses: [email protected] (J. Hon Romão). The synthesis of new cyclopenta[l]phenanthrenyl complexes [(g-C17H10Me)(g-C3H5)Mo(CO)2] and [(g-C17H9(COOMe)N(CH2)4)(g-C3H5)Mo(CO)2] is described. Although these compounds are structural analogues their reactivity is different. Protonation of [(g-C17H10Me)(g-C3H5)Mo(CO)2] gives a stable ionic compound [(g-C17H10Me)Mo(CO)2(NCMe)2][BF4] while its analogue containing both tertiary amino and carboxylic ester groups [(g-C17H9(COOMe)N(CH2)4)(g-C3H5)Mo(CO)2] decomposes under the same conditions. [(g-C17H10Me)Mo(CO)2(NCMe)2][BF4] reacts with cyclopentadiene to give a stable g-complex [(g-C5H6)(g-C17H10Me)Mo(CO)2][BF4] that was successfully oxidized to the Mo(IV) dicationic compound [(g-C5H5)(g-C17H10Me)Mo(CO)2][Br][BF4]. 2009 Elsevier B.V. All rights reserved.