This chemical is called Disiloxane, 1-ethenyl-1,1,3,3,3-pentamethyl-, and its CAS registry number is 1438-79-5. With the molecular formula of C₇H₁₈OSi₂, its molecular weight is 174.39. 

Other characteristics of the Disiloxane, 1-ethenyl-1,1,3,3,3-pentamethyl- can be summarised as followings: (1)ACD/LogP: 3.55; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 3.55; (4)ACD/LogD (pH 7.4): 3.55; (5)ACD/BCF (pH 5.5): 294.61; (6)ACD/BCF (pH 7.4): 294.61; (7)ACD/KOC (pH 5.5): 2037.47; (8)ACD/KOC (pH 7.4): 2037.47; (9)#H bond acceptors: 1; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 3; (12)Polar Surface Area: 9.23 Å²; (13)Index of Refraction: 1.406; (14)Molar Refractivity: 53.38 cm³; (15)Molar Volume: 217 cm³; (16)Polarizability: 21.16×10^-24cm³; (17)Surface Tension: 16.5 dyne/cm; (18)Density: 0.803 g/cm³; (19)Flash Point: 11.4 °C; (20)Enthalpy of Vaporization: 33.01 kJ/mol; (21)Boiling Point: 105.4 °C at 760 mmHg; (22)Vapour Pressure: 34.4 mmHg at 25°C.

Production method of this chemical: The Disiloxane, 1-ethenyl-1,1,3,3,3-pentamethyl- could be obtained by the reactants of chloro-trimethyl-silane and chloro-dimethyl-vinyl-silane. This reaction needs the reagent of H₂O, and the solvent of diethyl ether. The yield is 60 %.

Uses of this chemical: The Disiloxane, 1-ethenyl-1,1,3,3,3-pentamethyl- could react with pentamethyl-disiloxane, and obtain the 1,1-bis-(1,1,3,3,3-pentamethyl-disiloxanyl)-ethane and 1,2-Bis-(trimethylsiloxy-dimethylsilyl)-ethan. This reaction needs the catalyst of Pt. In addition, this reaction should be taken for 20 minutes at the temperature of 50 °C.

When you are using this chemical, please be cautious about it as the following: This chemical is irritating to eyes, respiratory system and skin. You should wear suitable protective clothing if you use it. It's highly flammable. Keep it away from the sources of ignition. In case of contacting with eyes, rinse immediately with plenty of water and seek medical advice.

You can still convert the following datas into molecular structure:
1.SMILES: O([Si](/C=C)(C)C)[Si](C)(C)C
2.InChI: InChI=1/C7H18OSi2/c1-7-10(5,6)8-9(2,3)4/h7H,1H2,2-6H3
3.InChIKey: MRRXLWNSVYPSRB-UHFFFAOYAY