A triangular lattice of quantum spins is a candidate for a quantum spin-liquid ground state. In a family of organic charge-transfer salts pairs of BEDT-TTF radicals host an unpaired electron and form such a triangular lattice. Superconductivity, magnetic order and its absence have been reported for these materials. Neutron diffraction hasn't been attempted on any of these compounds. Large deuteratedkappa-(BEDT-TTF)2Cu[N(CN)2]Cl crystals enable the application of neutron diffraction techniques for the first time. We propose to measure the low temperature crystal structure using D10 and additionally on CYCLOPS. These results would provide long sought input data for ab-initio band structure calculation. Besides long range magnetic order was found below 23 K. In order to elucidate the nature of the magnetic ordering, we propose to measure neutron diffraction in a low background setup on IN12. Due to the small moment size and small density of moments the experiment is only feasible on a triple axis spectrometer with energy analysis. Our initial calculations of the possible magnetic structures give lines in reciprocal space, where the magnetic Bragg peak can be expected.