Completely assign the NMR spectra using the atom labels provided in the crystal structure (4p), include the coupling pattern (e.g. doublet of triplets) (4p), explain the origin of the coupling (4p), and providing a rough estimate of the magnitude of the coupling constant in Hz (4p). Provide a proper Lewis structure for the compound, using R for the organic substituents connected to phosphorus (4p). For calculation of coupling constants in Hz), the frequency of the instrument was 400 MHz, which translates in a frequency of 376 Hz for 'F and 162 Hz for 3.P. Completely assign the NMR spectra using the atom labels provided in the crystal structure (4p), include the coupling pattern (e.g. doublet of triplets) (4p), explain the origin of the coupling (4p), and providing a rough estimate of the magnitude of the coupling constant in Hz (4p). Provide a proper Lewis structure for the compound, using R for the organic substituents connected to phosphorus (4p). For calculation of coupling constants in Hz), the frequency of the instrument was 400 MHz, which translates in a frequency of 376 Hz for 'F and 162 Hz for 3.P