Table 2. Exchange interactions (cm^–1) between dysprosium ions in 4-Dy, 5-Dy and 6-Dy.

			J dip	J ex	J tot
4-Dy	Dy1–Dy2		–1.08	–3.99	–5.07
	Dy1–Dy3		–1.15	–5.72	–6.87
	Dy2–Dy3		–1.08	–3.84	–4.92
5-Dy	Dy1–Dy2		–1.12	–5.49	–6.61
	Dy1–Dy3		–1.11	–6.67	–7.78
	Dy2–Dy3		–1.09	–8.67	–9.76
6-Dy	Dy1–Dy2		–1.15	–3.61	–4.76
	Dy1–Dy3		–1.21	–3.57	–4.78
	Dy2–Dy3		–1.17	–3.85	–5.02