Jamison, Gregory M. Saunders, Randall S. Wheeler, David R. Alam, Todd M. McClain, Mark D. Loy, Douglas A. Ziller, Joseph W. Isolation and Characterization of the Molybdenum Alkylidyne Complex [(F<sub>3</sub>C)Me<sub>2</sub>CO]<sub>2</sub>Mo(C-<i>t</i>-Bu)[N(Ar)PC(H)(CMe<sub>2</sub>Ph)] and Its Conversion to a Phosphamolybdacyclobutene Novel molybdenum alkylidyne [(F<sub>3</sub>C)Me<sub>2</sub>CO]<sub>2</sub>Mo(C-<i>t</i>-Bu)[N(Ar)PC(H)(CMe<sub>2</sub>Ph)] (Ar = 2,6-(<i>i</i>-Pr)<sub>2</sub>C<sub>6</sub>H<sub>3</sub>; <b>3b</b>) is formed in the reaction of <i>tert</i>-butylphosphaalkyne <b>2</b> with molybdenum alkylidene <b>1b</b>. Alkylidyne <b>3b</b>, which contains a formal (phosphaalkenyl)amido ligand, rearranges quantitatively at elevated temperature to form the alkoxide-shifted phosphamolybdacyclobutene <b>4b</b>. Complexes <b>3b</b> and <b>4b</b> have been fully characterized by spectroscopic and X-ray crystallographic analysis; cleavage of the P⋮C-<i>t</i>-Bu triple bond in complex <b>3b</b> is confirmed. Alkylidyne 3 b;3 b;Ph;Complexes 3 b;molybdenum alkylidene 1 b;Bu;CO;Mo;2 C 6 H 3 1996-07-23
    https://acs.figshare.com/articles/journal_contribution/Isolation_and_Characterization_of_the_Molybdenum_Alkylidyne_Complex_F_sub_3_sub_C_Me_sub_2_sub_CO_sub_2_sub_Mo_C-_i_t_i_-Bu_N_Ar_P_C_H_CMe_sub_2_sub_Ph_and_Its_Conversion_to_a_Phosphamolybdacyclobutene/3777963
10.1021/om960418z.s002