Formally Triplet Aluminyl Anions within the [Al 2 Pd 2 ] 2– Cluster Stabilized by All-Metal Double Aromaticity - Pengfei Chen; Xinggao Ji; Zhao Zhao; Jie Zeng; Genfeng Feng; Congqing Zhu; Jin Xie; Jun Zhu; Miquel Solà; Qin Zhu (Journal of the American Chemical Society, 2026)