What is the bond angle of SiCl2O?

silicon oxychloride is the most popular name for this. This is a very obscure area of chemistry- not a lot is known about halosiloxanes. Molecular SiOCl2 probably does not exist., there are various reports of polymeric forms with four coordinate Si- so a reasonable guess would be that these contain tetrahedral sp3 silicon with a bond angle of 109.5.