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Reactions of homoleptic rare‐earth aryloxides based Lewis pairs with organic azides were investigated, which gave either bimetallic rare‐earth azide complexes in an end‐to‐end fashion or FLP‐type 1,1‐addition product depending on the nature of azide reagents. The current reaction was found to be applicable for Lewis acids across the full range of rare‐earth metals. More details are discussed in the article by Xu et al. on page 559—564.