A Zipper-like Supramolecular Double-Chain based on 1 D π-π Stacking Interactions: Synthesis and Crystal Structure of [Cu(phen)(C4H4O4)(H2O)]2 · C4H6O4 (phen = 1,10-phenanthroline)

✍ Scribed by Yue-Qing Zheng; Jie Sun; Jian-Li Lin

• Publisher: John Wiley and Sons
• Year: 2000
• Tongue: German
• Weight: 140 KB
• Volume: 626
• Category: Article
• ISSN: 0372-7874
• DOI: 10.1002/1521-3749(200007)626:7<1501::aid-zaac1501>3.0.co;2-v

✦ Synopsis

Cu(C 12 H 8 N 2 )(C 4 H 4 O 4 )(H 2 O)] 2 ´C4 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) A Ê ; a = 68.89(1)°, b = 88.89(1)°, c = 73.32(1)°, Z = 1, R = 0.0308, wR 2 = 0.0799 for 3530 observed reflections (F 2 o ³ 2r(F 2 o ) out of 3946 unique reflections) consists of hydrogen bonded succinic acid molecules and succinato bridged 1 D zipperlike supramolecular 1 I [Cu(phen)(C 4 H 4 O 4 ) 2/2 (H 2 O)] 2 double chains based on 1 D p-p stacking interactions between the chelating phen systems at distances of 3.71 A Ê and 3.79 A Ê . 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) A Ê , d(Cu±N) = 2.034(2) A Ê ; axial: d(Cu±O) = 1.971(2) A Ê , d(Cu±N) = 1.995 A Ê ).