Dubs, Christian Yamamoto, Toshiki Inagaki, Akiko Akita, Munetaka Synthesis of a Library of Iridium-Containing Dinuclear Complexes with Bridging PNNN and PNNP Ligands (BL), [LM(μ-BL)M‘L‘]BF<sub>4</sub>. 2. Preparation, Basic Coordination Properties, and Reactivity of the Carbonyl Complexes A series of dinuclear carbonyl complexes with PNNP and PNNN ligands, [(L)M(PNNX)M‘(L)]BF<sub>4</sub> (X = P, N; M(L), M‘(L‘) = Ir(CO)<sub>2</sub>, Rh(CO)<sub>2</sub>, Pd(allyl)), have been prepared by carbonylation (1 atm) of the corresponding cod complexes, and the Rh/Ir complexes have been further converted to μ-η<sup>1</sup>:η<sup>2</sup>-acetylide complexes, where effective π-back-donation to the acetylide ligand is essential to stabilize them. On the basis of the stability of the acetylide complexes, the π-donating ability of the metal fragment in the PNNX system is estimated to be (P,N)Rh > (P,N)Ir > (N,N)M. The dinuclear PNNX complexes catalyze alkyne hydrogenation, alkene hydroformylation, and allylation of aniline with allyl alcohol, and, for the allylation, a dinuclear mechanism involving activation of allyl alcohol by interaction with a CO ligand is proposed. BL;dinuclear carbonyl complexes;ligand;acetylide complexes;PNNP;PNNN;dinuclear PNNX complexes catalyze alkyne hydrogenation;allyl alcohol;CO;Basic Coordination Properties;LM 2006-03-13
    https://acs.figshare.com/articles/dataset/Synthesis_of_a_Library_of_Iridium_Containing_Dinuclear_Complexes_with_Bridging_PNNN_and_PNNP_Ligands_BL_LM_BL_M_L_BF_sub_4_sub_2_Preparation_Basic_Coordination_Properties_and_Reactivity_of_the_Carbonyl_Complexes/3233806
10.1021/om050897e.s002