Table 5. Curie Factors and Energy Separations, ΔE, of the Meso-Protons Isotropic Shifts from 1–6 Complexes for W₂/W₁ = 6/4.

compound	δ (ppm) H-meso	10–3F1 (ppm K)	10–3F2 (ppm K)	|ΔE| (cm–1)	10–3 σ, (ppm K)
1	–32.33	–12.85	5.6	25.72	0.2
2	–30.59	–21.35	–2.36	32	0.2
3	–29.28	–87.37	–0.06	45.15	0.4
4	–35.52	–55.02	1.74	63.39	0.6
5	–37.98	–48.87	4.06	52.38	0.6
6	–28.37	–60.39	1.38	41.88	0.2