Dicyanamido–metal(II) complexes. Part 3: Hydrolysis of the dicyanamide into amidocyanamide during its interaction with Cu(II) perchlorate and 2-pyridylcarbonyl-N,N-bis(2-pyridylmethyl)amine
作者:Salah S. Massoud、Febee R. Louka、Masahiro Mikuriya、Hideaki Ishida、Franz A. Mautner
DOI:10.1016/j.inoche.2009.03.003
日期:2009.5
a μ1,5-bridging ligand via the terminal nitrile nitrogen atoms. A distorted SP geometry around the Cu2+ centers was achieved by the three N-atoms of the DPA and by the two nitrile groups of the bridging dca ligands. Complex 2 consists of a dimeric unit with CuN3O2 chromophore in coordination polyhedron that has a distorted SP geometry. The amidocyanamide ion, H2NCO–N–CN− acts as bis(monodentate) μ1
摘要 Cu(ClO4)2、2-吡啶基羰基-N,N-双(2-吡啶基甲基)胺 (DPA-CO-py) 和双氰胺 (Nadca) 在水性介质中的反应导致了三种配合物的分离: [Cu(DPA)(μ1,5-dca)]ClO4}n (1), [Cu2(pic)2(μ1,3-H2NCO–N-CN)2(H2O)2] · 2H2O (2) 和 Cu (pic)2 · H2O (3)。Cu2+ 离子在与 DPA-CO-py 和 dca 形成络合物期间不仅有助于 DPA-CO-py 水解为相应的二(2-甲基吡啶基)胺(DPA)和吡啶甲酸(Hpic),而且还导致双氰胺的两个腈基之一,NC-N-CN-(dca)部分水解为酰胺,H2NCO-NH-CN。对复合物进行了结构表征,1 和 2 的单个 X 射线结构揭示了它们的身份。配合物 1 形成一维聚合物链,dca 通过末端腈氮原子充当 μ1,5-桥接配体。通过 DPA