. Author manuscript; available in PMC: 2011 Aug 11.

Published in final edited form as: Tetrahedron Lett. 2010 Aug 11;51(32):4233–4236. doi: 10.1016/j.tetlet.2010.06.036

Table 1.

Hydrogen bonding parameters (A, °) for SO₄²⁻ binding in L.

D—H⋯O	H⋯O	D⋯O	∠DHO
N1—H1⋯4OA	1.53	2.633(7)	159.7
C3—H3A ⋯O4A	2.325	3.10	134.3
N11ⁱ—H11Bⁱ ⋯O1A	1.82	2.644(7)	137.7
N14—H14⋯O1A	1.69	2.716(7)	157.8
N14—H14⋯O3A	2.557	3.366	156
N11—H11B··O3A	1.87	2.852(7)	165.7