1,1,3,3-Tetraphenyl-1,3-bis(N-methylacetamidomethyl)-1,3-disiloxane is formed as a result of mild hydrolysis N-[chloro(diphenyl)silyl]methyl-N-methylacetamide. Its structure was studied by NMR spectroscopy and X-ray diffraction analysis. This is the first example of a neutral (O–Si) chelate siloxane with the coordination unit C=O→SiС3OSi.