Syntheses and structures of discrete copper(II) and cadmium(II) supramolecular complexes based on 1,4-diacylthiosemicarbazone ligands

Thiosemicarbazides and their metal complexes have attracted considerable interest because of their biological activities and their flexibility, which allows the ligands to bend and rotate freely to accommodate the coordination geometries of various metal centres. Discrete copper(II) and cadmium(II) complexes have been prepared by crystallization ofN-[2-(2-hydroxybenzoyl)hydrazinecarbonothioyl]propanamide (H3L) with Cu(CH3COO)2or Cd(NO3)2in a dimethylformamide/methanol mixed-solvent system at room temperature, affording the complexes di-μ-acetato-bis{μ4-1-[(2-oxidophenyl)carbonyl]-2-(propanamidomethanethioyl)hydrazine-1,2-diido}tetracopper(II) dimethylformamide disolvate, [Cu4(C11H10N3O3S)2(C2H3O2)2]·2C3H7NO, (I), and bis{μ2-[(2-hydroxyphenyl)formamido](propanamidomethanethioyl)azanido}bis[(4,4′-bipyridine)nitratocadmium(II)] dihydrate, [Cd2(C11H12N3O3S)2(NO3)2(C10H8N2)2]·2H2O, (II). Complex (I) consists of four CuIIcations, two μ4-bridging trianionic ligands and two μ2-bridging acetate ligands, while complex (II) is composed of two CdIIcations, two μ2-bridging monoanionic ligands, two nitrate ligands and two 4,4′-bipyridine ligands. These discrete complexes are connected by hydrogen bonds and van der Waals interactions to form a three-dimensional supramolecular architecture. Compared with (I), the phenolic hydroxy group and hydrazide N atom of the thiosemicarbazide ligand of (II) are not involved in coordination and lead to a binuclear CdIIcomplex. This different coordination mode may be attributed to the larger ionic radius of the CdIIion compared with the CuIIion.

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Syntheses and structures of three macrocyclic supramolecular complexes and one ZnII-containing coordination polymer generated from a semi-rigid multidentate N-containing ligand

Acta Crystallographica Section C Structural Chemistry ◽

10.1107/s2053229620016083 ◽

2021 ◽

Vol 77 (1) ◽

pp. 29-39

Author(s):

Xiang-Long Niu ◽

Lin Wei ◽

Jian-Cheng Liu ◽

Wan-He Jia ◽

Jian-Ping Ma ◽

...

Keyword(s):

Coordination Polymer ◽

Room Temperature ◽

Mixed Solvent ◽

Weak Interactions ◽

Three Dimensional ◽

Organic Ligand ◽

Solvent System ◽

Organic Ligands ◽

Mixed Solvent System ◽

Solution Reaction

Semirigid organic ligands can adopt different conformations to construct coordination polymers with more diverse structures when compared to those constructed from rigid ligands. A new asymmetric semirigid organic ligand, 4-{2-[(pyridin-3-yl)methyl]-2H-tetrazol-5-yl}pyridine (L), has been prepared and used to synthesize three bimetallic macrocyclic complexes and one coordination polymer, namely, bis(μ-4-{2-[(pyridin-3-yl)methyl]-2H-tetrazol-5-yl}pyridine)bis[dichloridozinc(II)] dichloromethane disolvate, [Zn2Cl4(C12H10N6)2]·2CH2Cl2, (I), the analogous chloroform monosolvate, [Zn2Cl4(C12H10N6)2]·CHCl3, (II), bis(μ-4-{2-[(pyridin-3-yl)methyl]-2H-tetrazol-5-yl}pyridine)bis[diiodidozinc(II)] dichloromethane disolvate, [Zn2I4(C12H10N6)2]·2CH2Cl2, (III), and catena-poly[[[diiodidozinc(II)]-μ-4-{2-[(pyridin-3-yl)methyl]-2H-tetrazol-5-yl}pyridine] chloroform monosolvate], {[ZnI2(C12H10N6)]·CHCl3} n , (IV), by solution reaction with ZnX 2 (X = Cl and I) in a CH2Cl2/CH3OH or CHCl3/CH3OH mixed solvent system at room temperature. Complex (I) is isomorphic with complex (III) and has a bimetallic ring possessing similar coordination environments for both of the ZnII cations. Although complex (II) also contains a bimetallic ring, the two ZnII cations have different coordination environments. Under the influence of the I− anion and guest CHCl3 molecule, complex (IV) displays a significantly different structure with respect to complexes (I)–(III). C—H...Cl and C—H...N hydrogen bonds, and π–π stacking or C—Cl...π interactions exist in complexes (I)–(IV), and these weak interactions play an important role in the three-dimensional structures of (I)–(IV) in the solid state. In addition, the fluorescence properties of L and complexes (I)–(IV) were investigated.

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Manganese(II), lead(II) and cadmium(II) coordination complexes containing a tetrazole-based acylamide ligand: synthesis and the influence of the metal ions on the structures

Acta Crystallographica Section C Structural Chemistry ◽

10.1107/s2053229617018101 ◽

2018 ◽

Vol 74 (2) ◽

pp. 139-145

Author(s):

Xiao-Ying Lin ◽

Qin-Qin Zheng ◽

Ling-Zhu Gong ◽

Ya-Min Liu ◽

Min-Yi Liu ◽

...

Keyword(s):

Metal Ions ◽

Mixed Solvent ◽

Three Dimensional ◽

Building Blocks ◽

Solvent System ◽

Coordination Complexes ◽

Divalent Metal ◽

Metal Salts ◽

Mixed Solvent System ◽

Intermolecular Hydrogen Bonds

Three new manganese(II), lead(II) and cadmium(II) coordination complexes have been prepared by reaction of N-(1H-tetrazol-5-yl)cinnamamide (HNTCA) with divalent metal salts (MnCl2, PbCl2 and CdCl2) in a mixed-solvent system, affording mononuclear to trinuclear structures namely, bis(methanol-κO)bis[5-(3-phenylprop-2-enamido)-1H-1,2,3,4-tetrazol-1-ido-κ2 N 1,O]manganese(II), [Mn(C10H8N5O)2(CH3OH)2], (1), bis[μ-5-(3-phenylprop-2-enamido)-1H-1,2,3,4-tetrazol-1-ido]-κ3 N 1,O:N 2;κ3 N 2:N 1,O-bis{aqua[5-(3-phenylprop-2-enamido)-1H-1,2,3,4-tetrazol-1-ido-κ2 N 1,O]lead(II)}, [Pb2(C10H8N5O)4(H2O)2], (2), and hexakis[μ2-5-(3-phenylprop-2-enamido)-1H-1,2,3,4-tetrazol-1-ido-κ3 N 1,O:N 2]tricadmium(II), [Cd3(C10H8N5O)6], (3). The structures of these three compounds reveal that the nature of the metal ions and the side groups of the organic building blocks have a significant effect on the structures of the coordination compounds formed. Intermolecular hydrogen bonds link the molecules into two-dimensional [complex (1)] and three-dimensional hydrogen-bonded networks. Complexes (2) and (3) show significant fluorescence, while complex (1) displays no fluorescence.

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Liquid-liquid extraction separation of lithium isotopes by using room-temperature ionic liquids-chloroform mixed solvent system contained benzo-15-crown-5

Journal of Molecular Liquids ◽

10.1016/j.molliq.2016.08.078 ◽

2016 ◽

Vol 223 ◽

pp. 1032-1038 ◽

Cited By ~ 21

Author(s):

Jiang Xiao ◽

Yongzhong Jia ◽

Chenglong Shi ◽

Xingquan Wang ◽

Ying Yao ◽

...

Keyword(s):

Ionic Liquids ◽

Room Temperature ◽

Mixed Solvent ◽

Solvent System ◽

Liquid Extraction ◽

Room Temperature Ionic Liquids ◽

Mixed Solvent System ◽

Lithium Isotopes ◽

Liquid Liquid Extraction ◽

Extraction Separation

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Syntheses and structures of one CuI-containing coordination polymer and two macrocyclic supramolecular complexes based on flexible 1,3,4-oxadiazole-containing ligands

Acta Crystallographica Section C Structural Chemistry ◽

10.1107/s2053229615012929 ◽

2015 ◽

Vol 71 (8) ◽

pp. 683-689

Author(s):

Xiang-Wen Wu ◽

Wan-Fu Wu ◽

Shi Yin ◽

Jian-Ping Ma

Keyword(s):

Room Temperature ◽

Mixed Solvent ◽

Decisive Role ◽

Molecular Complexes ◽

Solvent System ◽

Coordination Complexes ◽

Regular Tetrahedron ◽

Mixed Solvent System ◽

One Dimensional ◽

Anion Complex

Three coordination complexes with CuIcentres have been prepared using the symmetrical flexible organic ligands 1,3-bis{[5-(quinolin-2-yl)-1,3,4-oxadiazol-2-yl]sulfanyl}propane (L1) and 1,4-bis{[5-(quinolin-2-yl)-1,3,4-oxadiazol-2-yl]sulfanyl}butane (L2). Crystallization ofL1 with Cu(SO3CF3)2and ofL2 with Cu(BF4)2and Cu(ClO4)2in a CH2Cl2/CH3OH mixed-solvent system at room temperature afforded the coordination complexescatena-poly[[copper(I)-μ-1,3-bis{[5-(quinolin-2-yl)-1,3,4-oxadiazol-2-yl]sulfanyl}propane] methanesulfonate dichloromethane 0.6-solvate], {[Cu(C25H18N6O2S2)](CF3SO3)·0.6CH2Cl2}n, (I), bis(μ-1,4-bis{[5-(quinolin-2-yl)-1,3,4-oxadiazol-2-yl]sulfanyl}butane)dicopper(I) bis(tetrafluoridoborate)–dichloromethane–methanol (1/1.5/1), [Cu2(C26H20N6O2S2)2](BF4)2·1.5CH2Cl2·CH3OH, (II), and bis(μ-1,4-bis{[5-(quinolin-2-yl)-1,3,4-oxadiazol-2-yl]sulfanyl}butane)dicopper(I) bis(perchlorate)–dichloromethane–methanol (1/2/1), [Cu2(C26H20N6O2S2)2](ClO4)2·2CH2Cl2·CH3OH, (III). Under the control of the dumbbell-shaped CF3SO3−anion, complex (I) forms a one-dimensional chain and neighbouring chains form a spiral double chain. Under the control of the regular tetrahedron-shaped BF4−and ClO4−anions, complexes (II) and (III) have been obtained as bimetallic rings, which further interactviaπ–π interactions to form two-dimensional networks. The anions play a decisive role in determining the arrangement of these discrete molecular complexes in the solid state.

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Synthesis and Photoluminescence Property of Tris(8-hydroxyquinoline) Bismuth Rod-Like Structures at Room Temperature

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.415-417.1382 ◽

2011 ◽

Vol 415-417 ◽

pp. 1382-1386

Author(s):

Hong Liang Wang ◽

Jun Hao Zhang ◽

Zhao Kun Qu ◽

Liang Jia ◽

Jiao Long Wang

Keyword(s):

Room Temperature ◽

Mixed Solvent ◽

Photoluminescence Property ◽

Solvent System ◽

Molecular Formula ◽

Gravimetric Analysis ◽

Inorganic Element ◽

Mixed Solvent System ◽

Element Analysis ◽

Bismuth Complex

Tris(8-hydroxyquinoline) bismuth complex has been synthesized with a facile method in a mixed solvent system containing bismuth nitrate and 8-hydroxyquinolineat at room temperature. The molecular formula of the products is speculated by the C, H and N element analysis and thermal gravimetric analysis, and FTIR was also utilized to measure the structure, which further confirms the molecular formula of the products. The observation of FESEM and TEM shows that the morphology of tris(8-hydroxyquinoline) bismuth complexes is rod-like structure. The results of photoluminescence emission indicate that inorganic element plays key roles in the luminescence property. According to the results, we found that the photoluminescence of tris-(8-hydroxyquinoline) bismuth is stronger than that of 8-hydroxyquinoline.

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