Table 1.

Type A rotor linkers and their rotational barriers.

MOF	Rotator	Type	T/K*	Barrier/kJ mol−1	ω0/Hz	Method	Ref.
MOF-5		π-flip	363–435	47.3 ± 8.4	1.60 × 1012	2H NMR	[16]
MOF-5		π-flip	-	51.8	-	DFT	[17]
MIL-53(Cr)		π-flip	333–453	41	1.26 × 1011	2H NMR	[18]
MIL-47(V)		π-flip	373–483	45	8.80 × 1010	2H NMR	[18]
MIL-53(Al)		π-flip	359–492	37 ± 1	0.6 × 1010	2H NMR	[19]
UiO-66(Zr)		π-flip	213–403	30 ± 2	0.5 ± 0.8 × 1012	2H NMR	[22]
MIL-140		π-flip	-	27.4	-	DFT	[24]
DMOF		π-flip	253–359	32–36	0.3–10 × 1011	2H NMR	[23]
MFM-180		4-site	223–503	26; 28	1.6 × 1011; 3 × 107	2H NMR	[9]
MFM-181		4-site	153–473	20; 34	9 × 1011; 4.6 × 108	2H NMR	[9]
BODCA-MOF		6-site; 3-site; free	6–12; 12–50; 50–292	0.8	4.7 × 1010	1H T1 relaxation	[10]
MFM-112a		4-site	123–203	8.6	3 × 108; 18 × 108	2H NMR	[12]
MFM-115a		4-site; 6-site	203–315	14; 40	2 × 108; 5 × 1012	2H NMR	[12]
Zn2(TCPE)(DEF)2		π-flip	300–421	43(6)	2.2 × 1011	2H NMR	[25]
CdNa(2-stp)(pyz)0.5(H2O)		4-site	193–293	7.7	2.40 × 106	2H NMR	[26]
Zn2(1,4-ndc)2(DABCO)		4-site	193–293	53	Not reported	2H NMR	[26]
UTSA-76		π-flip	-	8.2	-	DFT	[27]
NOTT-101a		π-flip	-	20.2	-	DFT	[27]
UCLA-R3	Figure 9	3-site	-	56.5	8.7 × 1015	2H NMR	-
Cu(bbcbco)(H2O)	Scheme 2	-	-	15.5	-	DFT	[28]
Zn-BPEB	Scheme 2	free	150–293	2	2.2 × 1012	1H T1 relaxation	[29]

* Temperature range in which the experiments were performed.