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. 2021 Feb 2;12(12):4361–4366. doi: 10.1039/d0sc06988d

Anisotropy factors at 310 (±1) nm under atmospheric pressure (g3100.1 MPa) and overall pressure susceptivities of g310gP) for MUJ1–MUJ3 in various solvents.

Solvent E T a g 310 0.1 MPa (×103)b ΔgPc (TPa−1)
MUJ1 MUJ2 MUJ3 MUJ1 MUJ2 MUJ3
n-H 30.9 −0.2 +0.6 +3.4 −0.7 +1.4 −2.6
MCHd ∼31 +4.1 +3.7 +4.9 +0.6 +1.5 +0.9
CTCd 32.5 +1.7 +2.0 +2.2 −5.1e −4.8e −4.7e
THFd 37.4 −1.9 +1.2 +3.1 −4.9 −2.0 −7.1
EA 38.1 −1.2 +2.3 +2.4 +3.4 +2.4 −0.2
CHLd 39.1 −0.8 +3.4 +0.8 −0.0 −2.8f −2.9
DCM 41.1 −3.6 −1.9 −3.9 +3.0 +5.9 +3.0
AN 46.0 −3.4 −1.6 −3.7 +3.5 +15.6 +4.2
a

Reichardt's empirical solvent polarity parameter.

b

Positive (negative) g3100.1 MPa factor indicates preference for the in (out) conformer at atmospheric pressure.

c

ΔgP = (g310Pmaxg310Pmin)/(PmaxPmin); the pressure range applied (ΔP): 0.1–320 MPa, unless noted otherwise. Positive (negative) ΔgP value means equilibrium shift to the in-(Rp) (out-(Sp)) conformer upon pressurization.

d

Too bulky to be fully accommodated in the P[5] cavity (4.7 Å i.d.).55–58

e

ΔP: 0.1–160 MPa.

f

ΔP: 0.1–200 MPa.