Insertion Reactions of Phenyl Isocyanate and Phenyl Isothiocyanate into the Nd−S Bond of [(CH 3 C 5 H 4 ) 2 Nd(μ-SPh)(THF)] 2 : Synthesis and Crystal Structures

The two insertion reactions of [(CH 3 C 5 H 4 ) 2 Nd(μ-SPh)(THF)] 2 ( 1 ) with PhNCO and PhNCS in a 1:1 mole ratio in tetrahydrofuran (THF) solution were studied. The first reaction gives the dimeric complex [(CH 3 C 5 H 4 ) 2 Nd] 2 [μ-η 2 -OC(SPh)NPh] 2 ( 2 ), which has an interlinked tricyclic structure formed via two bridged Nd−O bonds, while the second reaction affords the complex (CH 3 C 5 H 4 ) 2 Nd[η 2 -SC(SPh)NPh](THF) ( 3 ), containing a η 2 -coordinated ligand of SC(SPh)NPh. The new complexes, including 1, were fully characterized by IR, elemental analysis, and single-crystal X-ray diffraction.