, have been synthesized by activation of the CS bond of isothioureas. Owing to delocalized metal–metal bonding, these stable complexes are the first noble‐metal analogues of the π‐aromatic cyclopropenyl cation [C3H3]+, with their all‐metal aromaticity involving d‐type atomic orbitals.
第一Ç 3 -对称44核价电子三角形
钯簇,[(
SAR')(PAR 3)的Pd} 3 ] +,已经由C的活化合成异
硫脲的S键。由于
金属与
金属之间的结合不牢固,这些稳定的络合物是π-芳族环
丙烯基阳离子[C 3 H 3 ] +的第一批贵
金属类似物,它们的全
金属
芳烃涉及d型原子轨道。