Table 3.

Relevant bond lengths (Å) and angles (°) for 2–5.

	2 Ta-Ni	3 Ta-Pd	4 Ta-Rh	5 Ta-Ir
Ta-M (Å)	2.2979(5)	2.4189(6)	2.4238(5)	2.4366(2)
FSRa	0.922	0.923	0.936	0.936
M-P (Å)	2.249(1)	2.389(2)	2.346(2)	2.362(2)
	2.239(1)	2.416(2)	2.302(1)	2.402(1)
	2.221(1)	2.385(3)	2.406(2)	2.305(1)
P-M-P (°)	123.13	112.98	91.84	91.95
	106.81	115.49	92.81	93.56
	129.17	131.53
Ta-N (Å)	2.111(3)	2.110(6)	2.141(4)	2.136(4)
	2.140(4)	2.10(1)	2.128(3)	2.128(3)
	2.135(4)	2.132(6)	2.108(5)	2.142(3)
Ta-Cl (Å)	2.375(1)b	2.358(3)b	2.356(1)b	2.370(1)b
	2.396(1)c	2.369(2)c	2.408(2)c	2.408(1)c
M-Cl (Å)	-	-	2.320(1)	2.338(1)
Torsional Angle	22.98	30.82	25.64	19.69
(P-M-Ta-N) (°)	11.60	4.43	25.62	22.49
	29.08	21.14	26.61	23.74

^aFSR = M_D/Σ(M_c): M_D = Metal-metal distance, M_c= Covalent Radii.

^bEquatorial Cl.

^cAxial Cl