Premium
A 16‐connected three‐dimensional hydrogen‐bonding network in tetrakis(4‐aminopyridinium) perylene‐3,4,9,10‐tetracarboxylate octahydrate
Author(s) -
Zhang ZhiHui,
Wang JinLong,
Gao Ning,
He MingYang
Publication year - 2014
Publication title -
acta crystallographica section c
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 17
ISSN - 2053-2296
DOI - 10.1107/s2053229614012947
Subject(s) - hydrogen bond , perylene , molecule , chemistry , salt (chemistry) , ion , crystallography , intermolecular force , hydrogen , inorganic chemistry , organic chemistry
The novel title organic salt, 4C 5 H 7 N 2 + ·C 24 H 8 O 8 4− ·8H 2 O, was obtained from the reaction of perylene‐3,4,9,10‐tetracarboxylic acid (H 4 ptca) with 4‐aminopyridine (4‐ap). The asymmetric unit contains half a perylene‐3,4,9,10‐tetracarboxylate (ptca 4− ) anion with twofold symmetry, two 4‐aminopyridinium (4‐Hap + ) cations and four water molecules. Strong N—H...O hydrogen bonds connect each ptca 4− anion with four 4‐Hap + cations to form a one‐dimensional linear chain along the [010] direction, decorated by additional 4‐Hap + cations attached by weak N—H...O hydrogen bonds to the ptca 4− anions. Intermolecular O—H...O interactions of water molecules with ptca 4− and 4‐Hap + ions complete the three‐dimensional hydrogen‐bonding network. From the viewpoint of topology, each ptca 4− anion acts as a 16‐connected node by hydrogen bonding to six 4‐Hap + cations and ten water molecules to yield a highly connected hydrogen‐bonding framework. π–π interactions between 4‐Hap + cations, and between 4‐Hap + cations and ptca 4− anions, further stabilize the three‐dimensional hydrogen‐bonding network.