Dative quadruple bonds between d10 transition metals and beryllium in BeM(PMe3)2 and BeM(CO)2 (M = Ni, Pd, and Pt) complexes: Transition metal fragments as six-electron donor and two-electron acceptor. - Sneha Parambath; Vishnu Thannimangalath; Pattiyil Parameswaran (J. Comput. Chem., 2023)