目的：进一步探索稀土芳基化合物的合成方法、稀土和芳基之间成键的可能性，以及芳基稀土二氯化物的稳定性。方法：在严格的无水无氧条件下，三氯稀土和萘锂以１∶１摩尔比在四氢呋喃溶液中反应，合成萘基稀土二氯化合物。结果：通过元素分析、红外光谱和质谱鉴定，确认新化合物的化学组成为Ｃ１０Ｈ７ＬｎＣｌ２·３ＴＨＦ（Ｌｎ＝Ｅｒ，Ｈｏ，Ｄｙ，Ｔｂ，Ｇｄ）。结论：三氯稀土发生了萘基化反应，空间位阻较大的萘基配体可以促进稀土和芳基之间σ键的形成，但是萘基稀土二氯化合物仍然是不稳定的。 OBJECTIVE: To further explore the synthesis of rare earth aryl compounds, the possibility of bonding between rare earth and aryl groups, and the stability of aryl rare earth dichloride. Methods: Under the condition of anhydrous and anaerobic, trichloro - rare earth and naphthalene lithium were reacted in tetrahydrofuran solution at the molar ratio of 1: 1 to synthesize naphthalene rare earth dichloro compounds. Results: The chemical composition of the new compound was confirmed to be C10H7LnCl2.3THF (Ln = Er, Ho, Dy, Tb, Gd) by elemental analysis, infrared spectroscopy and mass spectrometry. CONCLUSION: Naphthylation of trichlorinated rare earths occurs and the steric hindrance of naphthyl ligands can promote the formation of σ bonds between rare earths and aromatic groups. However, the naphthalene rare earth dichlorides are still unstable.