Synthesis and structural characterization of metal halide complexes containing N,N′-di(2-methoxyphenyl)formamidine (o-HDMophF)
摘要:
The reactions of N,N'-di(2-methoxyphenyl)formamidine (o-HDMophF) with transition metal halide complexes afforded CuCl2 center dot (o-HDMophF), 1, [CoX4][o-H(2)DMophF](2) (X = Cl, 2; Br, 3) and MCl2(o-HDMophF)(2) (M = Cd, 4; Ni, 5; Mn, 6; Pd, 7). These complexes were characterized by single-crystal X-ray diffraction and elemental analyses. The neutral o-HDMophF ligands in complexes 4-6 and 7 are coordinated to the metal centers in new bidentate and monodentate fashions, respectively. In the crystal structures of 1-7, C-H center dot center dot center dot X and/or N-H center dot center dot center dot X (X = Cl, Br) interactions are found to link the metal units to the o-HDMophF ligand, or its protonated cation (o-H(2)DMophF(+)). The neutral o-HDMophF compound in 1 adopts the s-trans-anti-s-trans-conformation, while those in complexes 4-6 and 7 adopt the s-trans-anti-s-trans- and s-cis-anti-s-trans-conformations, respectively. The o-H(2)DMophF(+) cations of complexes 2 and 3 adopt the s-cis-syn-anti-s-trans and s-trans-anti-anti-s-trans conformations. (c) 2005 Elsevier Ltd. All rights reserved.