Simple Method for the Handling of Crystals at Low Temperature: Application to the X-Ray Structure Determination of But2P(=NSiMe3)NHSiMe3 and [But2P(NSiMe3)2]Li·(thf)2

Abstract

Crystals of the very soluble iminophosphonamide species But₂P(=NSiMe₃)NHSiMe₃ (1) and [But₂P(NSiMe₃)₂]Li·(thf)₂ (2) have been obtained and were mounted at dry-ice temperature using a propan-2-ol matrix for X-ray data collection at 100 K. This very simple method for handling the crystals at low temperature is described together with the resulting molecular structures of (1) and (2).