Premium
A Zipper‐like Supramolecular Double‐Chain based on 1 D π‐π Stacking Interactions: Synthesis and Crystal Structure of [Cu(phen)(C 4 H 4 O 4 )(H 2 O)] 2 · C 4 H 6 O 4 (phen = 1,10‐phenanthroline)
Author(s) -
Zheng YueQing,
Sun Jie,
Lin JianLi
Publication year - 2000
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/1521-3749(200007)626:7<1501::aid-zaac1501>3.0.co;2-v
Subject(s) - triclinic crystal system , crystallography , chemistry , stacking , supramolecular chemistry , crystal structure , hydrogen bond , molecule , phenanthroline , denticity , chelation , succinic acid , stereochemistry , inorganic chemistry , organic chemistry
[Cu(C 12 H 8 N 2 )(C 4 H 4 O 4 )(H 2 O)] 2 · C 4 H 6 O 4 was prepared by the reaction of succinic acid, CuCl 2 · 2 H 2 O, 1,10‐phenanthroline (phen = C 12 H 8 N 2 ), and Na 2 CO 3 in a CH 3 OH–H 2 O solution. The crystal structure (triclinic, P 1 (no. 2), a = 7.493(1), b = 9.758(1), c = 13.517(1) Å; α = 68.89(1)°, β = 88.89(1)°, γ = 73.32(1)°, Z = 1, R = 0.0308, w R 2 = 0.0799 for 3530 observed reflections ( F $^2_o$ ≥ 2σ( F $^2_o$ ) out of 3946 unique reflections) consists of hydrogen bonded succinic acid molecules and succinato bridged 1 D zipperlike supramolecular $^1_\infty$ [Cu(phen)(C 4 H 4 O 4 ) 2/2 (H 2 O)] 2 double chains based on 1 D π‐π stacking interactions between the chelating phen systems at distances of 3.71 Å and 3.79 Å. The Cu atoms are fivefold trigonal bipyramidally coordinated by two N atoms of the bidentate chelating phen ligand and three O atoms of one water molecule and two bidentate bridging succinate ligands. The water O atom and one phen N atom are at the apical positions (equatorial: d(Cu–O) = 1.945, 2.254(2) Å, d(Cu–N) = 2.034(2) Å; axial: d(Cu–O) = 1.971(2) Å, d(Cu–N) = 1.995 Å).