A method and composition for depositing a silicon oxide film in an atomic layer deposition process at one or more temperatures of 650° C. or greater is provided. In one aspect, there is provided a method to deposit a silicon oxide film or material comprising the steps of: providing a substrate in a reactor; introducing into the reactor at least one halidosiloxane precursor selected from the group of compounds having formulae I and II described herein; purging the reactor with a purge gas; introducing an oxygen source into the reactor; and purging reactor with purge gas; and wherein the steps are repeated until a desired thickness of silicon oxide is deposited and the process is conducted at one or more temperatures ranging from about 650 to 1000° C.