. Author manuscript; available in PMC: 2015 Jan 1.

Published in final edited form as: RSC Adv. 2013 Dec 18;4(22):11251–11287. doi: 10.1039/C3RA47191H

Table 4.

Comparison of stability constants (logK) of glymes [CH₃O(CH₂CH₂O)_nCH₃] and crown ethers with alkali ions in methanol at 25 °C¹¹¹

Glyme, n=	Na⁺	K⁺	Cs⁺	Crown ether	Na^+c	K^+c	Cs^+c
3	1.18^a	1.38^a	1.17^a	12c4	1.41	1.58	1.6
4	1.28^b	1.72^b	1.45^b	15c5	3.30	3.35	3.58
5	1.47^b	2.20^b	1.85^b	18c6	4.36	6.07	4.79
6	1.60^b	2.55^b	2.17^b	21c7	2.54	4.41	5.01
7	1.67^b	2.87^b	2.41^b	24c8	2.35	3.53	4.15
8	1.83^a	3.28^a	2.77^a	27c9	2.14	3.47	3.95
9	1.96^a	3.66^a	3.09^a	30c10	2.14	3.98	4.15

Note:

calculated value,

experimental value,

selected value from the THECOMAC database.