This work describes the preparation of a series of platinum-aminocarbene complexes [PtCl{C(N=C ^a (C ₆ R ² R ³ R ⁴ R ⁵ CON ^b ))=N(H)R ¹ }(CNR ¹ )] ^a-b (8-19, 65-75% isolated yield) via the reaction of cis-[PtCl ₂ (CNR ¹ ) ₂ ] (R ¹ = Cy 1, t-Bu 2, Xyl 3, 2-Cl-6-MeC ₆ H ₃ 4) with 3-iminoisoindolin-1-ones HN=C ^a (C ₆ R ² R ³ R ⁴ R ⁵ CON ^b H) (R ² -R ⁵ = H 5; R ³ = Me, R ² , R ⁴ , R ⁵ = H 6; R ³ , R ⁴ = Cl, R ² , R ⁵ = H 7). New complexes 17-19 were characterized by elemental analyses (C, H, N), ESI ⁺ -MS, Fourier transform infrared spectroscopy (FT-IR), one-dimensional ( ¹ H, ¹³ C{ ¹ H}), and two-dimensional ( ¹ H, ¹ H correlation spectroscopy (COSY), ¹ H, ¹³ C heteronuclear multiple quantum correlation (HMQC)/ ¹ H, ¹³ C heteronuclear single quantum coherence (HSQC), ¹ H, ¹³ C heteronuclear multiple bond correlation (HMBC)) NMR spectroscopy, and authenticity of known species 8-16 was confirmed by FT-IR and ¹ H and ¹³ C{ ¹ H} NMR. Complexes 8-19 were assessed as catalysts for hydrosilylation of terminal alkynes with hydrosilanes to give vinyl silanes, and complex [PtCl{C(N=C ^a (C ₆ H ₃ (5-Me)CON ^b ))=N(H)(2-Cl-6-MeC ₆ H ₃ )}{CN(2-Cl-6-MeC ₆ H ₃ )}] ^a-b (18) showed the highest catalytic activity. The catalytic system proposed operates at 80-100 °C for 4-6 h in toluene and with catalyst loading of 0.1 mol %, enabling the reaction of a number of terminal alkynes (PhC≡CH, t-BuC≡CH, and 4-(t-Bu)C ₆ H ₄ C≡CH) with hydrosilanes (Et ₃ SiH, Pr ₃ SiH, i-Pr ₃ SiH, and PhMe ₂ SiH). Target vinyl silanes were prepared in 48-95% yields (as a mixture of α/β isomers) and with maximum turnover number of 8.4 × 10 ³ . Hydrosilylation of internal alkynes (PhC≡CPh, Me(CH ₂ ) ₂ C≡C(CH ₂ ) ₂ Me, and PhC≡CMe) with hydrosilanes (Et ₃ SiH, PhMe ₂ SiH) led to the corresponding trisubstituted silylated alkenes in 86-94% yields. Initial observations on the mechanism of the catalytic action of platinum-ADC catalysts 8-19 suggested a molecular catalytic cycle.