Constructions of seven noncovalent-bonded supramolecules from reactions of Cu(II)/Cd(II)/Zn(II) with isonicotinamide and carboxylates. Issue 12 (29th September 2021)

• Record Type: Journal Article
• Authors: Xu, Weiqiang; Hu, KaiKai; Jin, Shouwen; Zhang, Yuting; Wang, Daqi
• Is Part Of: Inorganic and nano-metal chemistry. Volume 51:Issue 12(2021)
• Page Start: 1842
• Page End: 1859
• Publication Date: 2021-09-29
• Subjects: Crystal structure -- isonicotinamide -- carboxylate -- mixed-ligand -- noncovalent interaction; Inorganic compounds -- Synthesis -- Periodicals; Nanostructured materials -- Periodicals; Reactivity (Chemistry) -- Periodicals; Inorganic compounds -- Synthesis; Nanostructured materials; Reactivity (Chemistry); Periodicals; 546
• DOI: 10.1080/24701556.2020.1862207
• Languages: English
• ISSNs: 2470-1556

Abstract

Abstract: Transition metal carboxylates with O- and N-donor ligands are interesting for their structural features. Seven novel isonicotinamide(inic)-based metal complexes of [Cd(inic)2 (L1)2 (H2 O)2 ] · 2H2 O (1) (L1 = 2-chloronicotinate), [Cd(inic)2 (L2)2 (H2 O)2 ] (2) (L2 = 2, 4-dichlorobenzoate), [Cu(inic)2 (L3)2 ] (3) (L3 = 4-chlorophenoxyacetate), [Cu3 (inic)6 (L4)2 (HL4)2 (H2 O)2 ] · 2H2 O (4) (L4 = azelate), [Zn(inic)2 (L1)2 (H2 O)2 ] · (inic) · H2 O (5), [Zn(inic)(L5)(H2 O)4 ] (6) (L5 = 3-nitrophthalate) and [Zn2 (inic)2 (L6)2 ] · 5H2 O (7) (L6 = 1, 4-cyclohexanedicarboxylate) have been obtained by the introduction of the carboxylates by the common solution method and are structurally featured by different techniques of EA, IR spectra, TG and SCXRD analysis. The X-ray studies told that these complexes display mononuclear to trinuclear structures with octahedral/square-pyramidal geometry around the Zn 2+, trigonal bipyramidal/octahedral at the Cu 2+ and octahedral for the Cd 2+ . The inic in 1 –7 are coordinated only in monodentate fashion with its ring N, while 5 has the lattice inic. The carboxylates coordinated to the metal in monodentate, chelating bidentate and bridging bidentate fashions. The pair of complementary N-H···O H-bonds from the CONH2 of the inic were found in all compounds except 7 . Except 1 and 2, all other compounds bear the CH-O contacts from the pyridine CH of the inic. The intricate intra- and intermolecular classical H-bonds, CH-N, CH-O, CH-Cl, CH2 -O, O-N, O-O, Cl-O, Cl-Cl, CH-π, CH2 -π, C-π, N-π, Cl-π and π-π associations are elucidated by the X-ray crystallographic studies, which push the discrete complexes into high-dimensional ordered supramolecular structures.