摘要:
Hexakis[bis(2-aminoethoxy)methylsilylethyl]benzene and hexakis[bis(N,N-dimethyl-2-aminoethoxy)methylsilylethyl]benzene C-6[(NR2CH2CH2O)(2)SiMeCH2CH2](6) (4, R = H; 5, R = Me) were prepared from hexakis(methyldichlorosilylethyl)benzene C-6(Cl2MeSiCH2CH2)(6) and 2-aminoethanol or N,N-dimethyl-2-aminoethanol, respectively. Compounds 4 and 5 react with anhydrous cobalt (II) chloride to give poorly soluble dodecachloro{hexakis[bis(2-aminoethoxy)methylsilylethyl]benzene}hexacobalt and dodecachloro{hexakis[bis(N,N-dimethyl-2-aminoethoxy)methylsilyiethyl]benzene}hexacobalt {Co-6[(NR2CH2CH2O)(2)SiMeCH2CH2](6)C-6}Cl-12 (R = H or Me), respectively. Polyfunctional amine 4 reacts with dicobalt octacarbonyl to produce hexakis[bis(2-aminoethoxy)methylsilylethyl]benzenedicobalt(II) tetrakis(tetracarbonylcobaltate) {Co-2[(NH2CH2CH2O)(2)SiMeCH2CH2](6)C-6}[Co(CO)(4)](4). N,N-Dimethyl-substituted polyfunctional amine 5 is lowly reactive in the reaction with Co-2(CO)(8), whereas the simplest model of this compound, viz., bis(N,N-dimethyl-2-aminoethoxy)dimethylsilane (NMe2CH2CH2O)(2)SiMe2, slowly reacts with Co-2(CO)(8) to give tris [bis(N,N-dimethyl-2-aminoethoxy)dimethylsilane] cobalt(II) bis(tetracarbonylcobaltate) {Co[(NMe2CH2CH2O)(2)SiMe2](3)}[Co(CO)(4)](2). Thermal decomposition and transformations of the resulting complexes under the action of oxygen and water were studied.