685834-80-4Relevant academic research and scientific papers
Dimolybdenum complexes with mixed formamidinate ligands
Wu, Ying-Yann,Kao, Ya-Chen,Chen, Jhy-Der,Hung, Chen-Hsiung
, p. 1002 - 1010 (2008/10/09)
A series of dimolybdenum complexes containing mixed formamidinate ligand are discussed. The reactions of trans-Mo2(O2CCH 3)2(o-DMophF)2 [o-HDMophF = N,N′-di(2-methoxyphenyl)formamidine] with N,N′-di(2-pyridyl) formamidine (HDpyF), N,N′-di(2-pyrimidyl)formamidine (HDpmF) and N,N′-di(6-methyl-2-pyridyl)formamidine (HDMepyF), in refluxing CH 2Cl2 afforded the complexes, trans-Mo2(O 2CCH3)(DpyF)(o-DMophF)2 (1), trans-Mo 2(O2CCH3)(DpmF)(o-DMophF)2 (2), and trans-Mo2(O2CCH3)(DMepyF)(o-DMophF) 2 (3), respectively. The o-DMophF- and DMepyF- ligands in these complexes adopt the s-cis, s-trans conformation, resulting in Mo-O short distances [2.889 (3) and 2.861(2) ? for 1; 2.880(3) and 3.024(4) ? for 2], while the DpyF- ligand adopts the s-cis, s-trans conformation, resulting in a Mo-N [3.208(4) ?] and a Mo-H [2.90 (3) ?] short distances. The reactions of trans-Mo2(O 2CCH3)2(o-DMophF)2 with HDMepyF in CH3CN gave complexes 3, trans-Mo2(O2CCH 3)(DMepyF)2(o-DMophF) (4), and trans-Mo 2(DMepyF)2(o-DMophF)2 (5). The o-DMophF - ligands in 4 and 5 adopt the s-cis, s-cis conformation while DMepyF- assumes an s-cis, s-trans conformation. Complexes 1-5 are the first dimolybdenum complexes containing mixed formamidinate ligands.
