A Novel Dinuclear Copper(II) Complex Molecule: Synthesis and Crystal Structure of Cu2(phen)2(H2O)2(C5H6O4)2 with phen = 1,10-phenanthroline

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

• Publisher: John Wiley and Sons
• Year: 2000
• Tongue: German
• Weight: 112 KB
• Volume: 626
• Category: Article
• ISSN: 0372-7874
• DOI: 10.1002/(sici)1521-3749(200004)626:4<816::aid-zaac816>3.0.co;2-v

✦ Synopsis

Blue crystals of Cu 2 (phen) 2 (H 2 O) 2 (C 5 H 6 O 4 ) 2 were obtained from a CH 3 OH±H 2 O solution containing CuCl 2 , 1,10-phenanthroline (phen), glutaric acid and Na 2 CO 3 . The crystal structure (monoclinic, P2 1 /c (no. 14), a = 10.271(1), b = 10.595(1), c = 15.585(1) A Ê , b = 107.105(3)°, Z = 2, R = 0.0328, wR 2 = 0.1027 for 3376 observed reflections (F 2 o ³ 2r(F 2 o ) out of 3728 unique reflections) is built up of dinuclear Cu 2 (phen) 2 (H 2 O) 2 (C 5 H 6 O 4 ) 2 complex molecules centered at inversion centers. The Cu atoms are square-pyramidally coordinated by two nitrogen atoms of one bidentate chelating phen ligand and three oxygen atoms from two bridging glutarate anions and one axial water molecule (d(Cu±N) = 2.018(2), 2.024(2) A Ê ; basal d(Cu±O) = 1.949( 2), 1.956(2) A Ê ; axial d(Cu±O) = 2.382(2) A Ê ). Through the p-p stacking interactions extending in a direction, the complex molecules are interlinked into 2 D layers parallel to the ac plane. The resultant 2 D layers are held together by hydrogen bonds between water molecules and uncoordinated carboxyl oxygen atoms.