Table 1.

Selected bond distances (Å) for compounds meso- and dl-4

Bond	meso-4	dl-4
Pd1–Si1	2.3634(10)	2.3713(16)
Pd1–Si2	2.3405(9)	2.3626(14)
Pd2–Si3		2.3632(17)
Pd2–Si4		2.3613(15)
Pd1–P1	2.3307(10)	2.3259(16)
Pd1–P2	2.3391(9)	2.3465(15)
Pd2–P3		2.3277(17)
Pd2–P4		2.3402(15)
Si–Si	2.3720(13)	2.355(2)