Syntheses, crystal structures and luminescence properties of two copper(II) complexes with terpyridine and dicarboxylate ligands

• Published in: Transition metal chemistry (Weinheim) Vol. 40; no. 2; pp. 227 - 233
• Main Authors: Fu, Wei-Wei, Ye, Shi-Qi, Liu, Yang, Chen, Man-Sheng, Kuang, Dai-Zhi
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 01.03.2015; Springer Nature B.V
• Subjects: Catalysis; Chemistry; Chemistry and Materials Science; Construction; Diffraction; Hydrogen bonds; Inorganic Chemistry; Ligands; Luminescence; Networks; Organometallic Chemistry; Physical Chemistry; Terminals; Three dimensional; Apical Site; Symmetry Code; Terpy; Luminescence Property; Terpyridine
• ISSN: 0340-4285; 1572-901X
• DOI: 10.1007/s11243-015-9910-9

Two coordination complexes [Cu(phtpy)(obda)]·2H 2 O ( 1 ) and [Cu 4 (meophtpy) 4 (mbda) 4 ]·4H 2 O ( 2 ) [phtpy = 4′-phenyl-2,2′:6′,2″-terpyridine, meophtpy = 4′-(4-methoxyphenyl)-2,2′:6′,2″-terpyridine, H 2 obda = 1,2-benzenedicarboxylic acid and H 2 mbda = 1,3-benzenedicarboxylic acid] have been synthesized under hydrothermal conditions and characterized by IR, elemental analysis and X-ray single-crystal diffraction. In complex 1 , the Cu(II) atoms are bridged by obda 2− ligands to give 1D chains with phtpy as a terminal ligand, while a 3D network is constructed by hydrogen bonds and π–π interactions. In complex 2 , the Cu(II) atoms are coordinated by two meophtpy ligands and also linked by mbda 2− ligands forming a discrete tetranuclear complex. In this complex also, a 3D network is constructed by hydrogen bonds and π–π interactions. The most striking feature of complex 2 is that one meophtpy ligand is almost overlapped upon the next which is seldom found in 2,2′:6′,2″-terpyridine complexes. The luminescence properties of both complexes 1 and 2 have been investigated.