Molecular dynamics in solid bis(eta-arene)molybdenum complexes studied by solid-state deuterium nuclear magnetic resonance spectroscopy

Variable-temperature solid-state H-2 NMR spectra have been recorded on microcrystalline Samples of [Mo(eta-C6D6)(2)], [Mo{eta-C6D3(CD3)(3)-1,3,5}(2)] and [ZrS2{Mo[eta-C6D3(CD3)(3)-1,3,5](2)}(0.15)]. In the case of [Mo(eta-C6D6)(2)] the spectra are invariant in the range 160-360 K and are consistent with rapid ring rotation at all accessible temperatures. For both [Mo{eta-C6D3(CD3)(3)-1,3,5}(2)] and [ZrS2{Mo[eta-C6D3(CD3)(3)-1,3,5](2)}(0.15)]eta-C6D3(CD3)(3) ligands were found to be static at all temperatures up to 360 K.