The origin of very strong antiferromagnetic exchange in N(2)(3-) bridged complex, [{[(Me(3)Si)(2)N](2)Gd(THF)}(2)(μ-η(2):η(2)-N(2))](-) (1) has been probed using density functional theory (DFT) combined with molecular orbital (MO) and natural bond orbital (NBO) analysis. The analysis helps us to propose a generic mechanism of coupling for a {2p-4f} class of compounds.
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