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. 2019 Apr 9;10(18):4767–4774. doi: 10.1039/c9sc00717b

Table 1. Selected bond distances and angles of 1, 2, and 3.

	Ni–N1 (Å)	Ni–P1, 2 (Å)	Ni–L ^a (Å)	N1–Ni–L ^a (°)	P1–Ni–P2 (°)	τ ₄
(PNP)Ni(ONO₂) (1)	1.887(3)	2.215(1), 2.220(1)	1.897(2)	175.4(1)	169.3(4)	0.11
(PNP)Ni(NO₂) (2)	1.907(4)	2.192(1), 2.193(1)	1.860(4)	176.1(2)	170.5(2)	0.10
(PNP)Ni(NO) (3)	1.999(4)	2.223(1), 2.244(1)	1.694(4)	148.5(2)	142.5(5)	0.49
(PNP)Ni(NO) (3)	1.997(4)	2.248(1), 2.218(1)	1.698(4)	148.7(2)	142.7(5)	0.49

^aL = O(1) for 1, N(2) for 2 and 3. Inline graphic α, β = the two largest angles in the four-coordinate species.