Table 1. Metrical data for [Tism^PriBenz]M derivatives.

	d(M–C)/Å	d(M–C) – ∑(cov. radii) a	∑(Si–C–Si)/°	d(C–[Si3]) b /Å
[TismPriBenz]Li	2.273(9)	0.23	355.8	0.22
[TismPriBenz]MgMe	2.4925(12)	0.32	347.8	0.37
[κ3-TismPriBenz]ZnMe	2.171(3)	0.19	346.3	0.40
[TismPriBenz]Cu	2.281(7)	0.20	355.2	0.23
[κ4-C4-TismPriBenz*]Cu	2.4283(18)	0.35	357.8	0.15
[TismPriBenz]NiBr	2.2197(16)	0.22	347.7	0.38
[TismPriBenz]H	—	—	342.3	0.47

^a Ref. 36.

^bDistance of bridgehead carbon from the [Si₃] plane.