Skip to main content
. 2021 Jun 28;12(32):10919–10929. doi: 10.1039/d1sc01458g

Selected geometric parameters of dinuclear FeII and NiII (green rows) helicates at 100 K, except for 4·5NO2CH3 at 253 K. HS Fe(ii) in bold text, octahedral Ni(ii) in blue text.

Complexes Space group 〈Fe–N〉 (Å) Σ° Spin state M⋯M (Å)
1·solvents P 1.967, 1.962 60.9, 59.7 LS, LS 10.0361(6)
1Ni·solvents P21/n 2.097, 2.076 75.2, 70.2 S = 1 10.313(1)
2·solvents Pbca 1.972, 1.971 58.7, 57.8 LS, LS 10.1619(9)
2Ni·solvents Ibca 2.083 69.7 S = 1 10.3891(8)
3·6CH3CN·C4H10O P 1.980, 1.980 62.0, 61.5 LS, LS 10.3227(7)
4·solvents P 1.973, 1.964 57.0, 56.8 LS, LS 10.018(1)
4·5.5NO2CH3 P 1.967, 2.058 62.0, 77.2 LS, mixLS/HS 10.1554(7)
4·5NO2CH3 (253 K) P 1.980, 2.181 63.0, 95.3 LS, HS 10.2281(9)
5·solvents C2/c 1.953 57.0 LS 9.9711(9)