Table 2.

Experimental (x-ray diffraction) and calculated bond distances and Mayer bond orders for compounds 5 and 6

Bond	Distance, Å		Bond order
	Experimental	Calculated
Compound 5
Pd1–Si1	2.3526(11)	2.401	0.672
Pd1–Si2	2.4015(8)	2.457	0.747
Pd1–Si3	2.3385(8)	2.384	0.709
Pd1–Si4	2.3464(11)	2.405	0.729
Pd1–Si5	2.2903(8)	2.326	0.769
Pd2–Si1	2.5273(10)	2.564	0.542
Pd2–Si3	2.3832(9)	2.443	0.628
Pd3–Si1	2.5966(9)	2.652	0.455
Pd3–Si5	2.4033(11)	2.439	0.668
Pd1–Pd2	2.7996(3)	2.939	0.200
Pd1–Pd3	2.7677(3)	2.899	0.211
Si3···Si5	2.8919(13)	2.928	0.280
Compound 6
Pd1–Si1	2.3265(13)	2.349	0.673
Pd1–Si2 or Pd1–Si2*	2.2944(9)	2.32	0.747
Pd1–Si3 or Pd1–Si3*	2.4357(10)	2.508	0.713
Pd2–Si1 or Pd2*–Si1	2.5124(5)	2.572	0.519
Pd2–Si2 or Pd2*–Si2*	2.5781(10)	2.621	0.460
Pd3–Si2 or Pd3–Si2*	2.6093(9)	2.649	0.449
Pd1–Pd2 or Pd1–Pd2*	2.7332(3)	2.815	0.204
Pd1–Pd3	2.7013(4)	2.804	0.218