Combining P(SiMe3)3 or As(SiMe3)3 With Ph2InC] in a 1 : 1 mole ratio results in the elimination of Me3SiCl via a dehalosilylation reaction to yield [Ph2InP(SiMe3)2]2 (I) and [Ph2InAs(SiMe3)2]2 (II), respectively. X-ray structures were determined for I and II. The (InP)2 core of dimer I is planar, whereas in dimer II the (InAs)2 ring is slightly puckered.