Table 1 Phase sequence for studied compounds

From: Heliconical smectic phases formed by achiral molecules

n

m.p.

HexI

 

SmCTB

 

SmAb

 

SmA

 

NTB

 

N

 

Iso

1

138.7 (48.3)

        

144.5 a

283.5 (2.7)

2

123.6 (52.2)

56.6 (4.29)

      

141.0 a

279.4 (3.2)

3

122.3 (36.8)

        

135.7 a

267.6 (2.2)

4

131.1 (47.3)

66.2 (5.1)

      

132.0 a

260.0 (2.1)

5

127.3 (39.9)

71.5 (5.1)

      

129.8 a

248.8 (1.9)

6

102.7 (40.4)

73.6 (4.5)

      

127.0 a

243.6 (1.7)

7

115.4 (54.4)

84.8 (4.6)

104.2 b

104.4 (0.07) b

122.8 (0.04)

  

236.5 (1.8)

8

112.2 (49.6)

88.8 (4.3)

100.4 b

102.6 (0.06) b

143.9 (0.05)

  

231.9 (2.0)

9

112.0 (50.4)

89.9 (4.6)

  

99.3 (0.07)

158.9 (0.09)

  

224.0 (1.6)

10

101.4 (56.9)

94.5 (5.6)

  

99.4 (0.02)

172.3 (0.11)

  

222.3 (1.5)

  1. Phase transition temperatures (°C) and associated enthalpy changes (in parentheses, kJ mol−1) obtained by DSC for the CB6OIBeOn series. General molecular structure of CB6OIBeOn is also given
  2. a From microscopic observation
  3. b SmA-SmAb and SmAb-SmCTB transitions were not resolved in the thermograms, combined enthalpy changes are given