科研之友
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摘要
The consecutive addition of AgSO(3)CF(3) (1 or 2 equiv) and cyanoguanidine (1 or 2 equiv, respectively) to the platinum(II) precursor [Ptl(2)(tmeda)] leads to the cis-[Ptl(tmeda){(N) under bar CN=C(NH(2))(2))](SO(3)CF(3)) (1 center dot(SO(3)CF(3))) or cis-[Pt(tmeda){(N) under bar CN=C(NH(2))(2)}(2)](SO(3)CF(3))(2) (2 center dot(SO(3)CF(3))(2)) complexes. The reaction between 1 center dot(SO(3)CF(3)) or 2 center dot(SO(3)CF(3))(2) and the excess of R(2)NH (R = H, R(2) = C(5)H(10)) in EtOH gives the triazapentadiene compounds cis-[Pt(tmeda)((N) under bar HC(NR(2))NC(NH(2))(N) under barH}](SO(3)CF(3)) (3 center dot(SO(3)CF(3)) and 4 center dot(SO(3)CF(3)), correspondingly). Protonation of these species results in cis-[Pt(tmeda){(N) under bar HC(NR(2))NHC(NH(2))(N) under barH}](SO(3)CF(3))(2) ([3 center dot H](SO(3)CF(3))(2) and [4 center dot H](SO(3)CF(3))(2), respectively). The interaction of solid 2 center dot(SO(3)CF(3))(2) and the gaseous RNH(2) (R = H, Me) leads to cis-[Pt(tmeda){(N) under bar HC(NHR)NHC(NH(2))NH}(2)](SO(3)CF(3))(2) (5 center dot(SO(3)CF(3))(2) and 6 center dot(SO(3)CF(3))(2), respectively). Treatment of an acetone solution of 2 center dot(SO(3)CF(3))(2) with an aqueous NH(3) or the reaction of 5 center dot(SO(3)CF(3))(2) with Me(2)CO produces the triazine complex cis-Pt(tmeda){(N) under barH=CNHC(Me)(2)}NHC(NH)(2)N}(2)(SO(3)CF(3))(2) (7 center dot(SO(3)CF(3))(2)). The reaction of 5 center dot(SO(3)CF(3))(2) with Me(2)CO also leads to 7 center dot(SO(3)CF(3))(2). All new complexes were characterized by elemental analyses (C, H, N), electrospray ionization mass spectrometry, IR, and (1)H and (13)C NMR spectroscopies. The structures of 1 center dot(SO(3)CF(3)), 2 center dot(SO(3)CF(3))(2), 3 center dot(SO(3)CF(3)), [4 center dot H](SO(3)CF(3))(2), 5 center dot(SO(3)CF(3))(2), and 7 center dot(SO(3)CF(3))(2) were determined by single-crystal X-ray diffraction.
- 出版日期2009-9-21
