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Article
Rationalizing the catalytic performance of Cr(III) complexes stabilized with alkylphosphanyl PNP ligands for selective ethylene tri-/tetramerization: a DFT study
The effect of alkylphosphanyl substitutions on the PNP scaffold toward ethylene tri-/tetramerization has been explained using density functional theory (DFT). Our calculations show that different alkylphosphan...
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Article
Synthesis, crystal structure, redox property, and cytotoxic activity of a dinuclear cobalt(II) complex bearing a tetradentate benzimidazole ligand
A tetradentate benzimidazole ligand cis,cis,cis,cis-2,2′,2″,2‴-(cyclopentane-1,2,3,4-tetrayl)tetrakis(1H-benzo[d]imidazole) (cttb) and its dinuclear cobalt(II) complex [Co2(cttb)Cl4]·2DMF·H2O have been synthesize...
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Article
A new zinc coordination polymer constructed from 4-[(8-hydroxy-5-quinolinyl)azo]-benzenesulfonic acid: synthesis, structure, and photoelectrical property
One new supramolecular compound based on H2L (H2L = 4-[(8-hydroxy-5-quinolinyl)azo]-benzenesulfonic acid, C15H11O4N3S), [Zn3L2(OH)2(H2O)6]n (1), has been synthesized by hydrothermal technique. Compound 1 exhibits...
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Article
Rapid evaluation of the interaction energies for O–H···O hydrogen-bonded complexes
Rapid and accurate evaluation of the O–H···O interaction energies is important because the O–H···O hydrogen bonds are ubiquitous in biosystems. In this paper, the polarizable dipole–dipole interaction model is...
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Article
On the determinant evaluation of quasi penta-diagonal matrices and quasi penta-diagonal Toeplitz matrices
Recently, three computational algorithms for evaluating the determinant of quasi penta-diagonal matrices have been proposed by El-Mikkawy and Rahmo (Comput Math Appl 59:1386–1396, 2010), by Neossi Nguetchue and A...
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Article
A DFT study on structure, stability, and optical property of fullerenols
The impact of hydroxyl group adsorption on fullerene surface (namely fullerenol) has been systematically investigated in this study using the hybrid density-functional theory calculations. We find that the rel...
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Article
The braid index of polyhedral links
Polyhedral links have been used to model DNA polyhedra and protein catenanes. Some topological characteristics of a type of polyhedral links fabricated from a polyheron by the method of ‘n-branched curve and X-ta...
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Article
Three isostructural 3D supramolecules with p-thioacetatebenzoic acid ligand: syntheses, structure characterizations, and properties
p-Thioacetatebenzoic acid (H2L) and a combination of N-donor ligand of 4,4′-bipyridine (4,4′-bipy) with metal(II) ions give rise to three 3D supramolecules of general formula [M(HL)2(4,4′-bipy)2(H2O)2] · H2O, M =...
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Article
Theoretical studies of the spectroscopic properties of blue emitting iridium complexes
Electronic structures, absorptions and emissions of a series of (ppy)2Ir(acac) derivatives (ppy = 2- phenylpyridine; acac = acetoylacetonate) with fluoro substituent on ppy ligands were investigated theoretically...
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Article
Synthesis, crystal structure, and DNA-binding studies of a one-dimensional copper(II) polymer bridged both by oxamidate and thiocyanato ligands
A new one-dimensional copper(II) polymer, [Cu4(dmapox)2(SCN)4(CH3OH)2] n , where dmapox is the dianion of N,N′-bis[3-(dimethylamino)propyl]oxamide, was synthesized and characteri...
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Article
Synthesis, crystal structure and spectroscopic properties of two new complexes containing azido or dicyanamido bridges
Two new complexes, [Cu(L1){N(CN)2}]·ClO4 (1) (L1 is 1,8-dimethyl-1,3,6,8,10,13-hexa-azacyclotetradecane) and [Co(L2)(N3)2]·ClO4 (2) (L2 is 5,7,7,12,14,14-hexamethyl-1,4,8,11-tetra-azacyclotetradecane) have been s...
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Article
Molecular and Supramolecular Structures of a Nickel(II)–Copper(II)–Nickel(II) Trinuclear Complex Containing a New Macrocyclic Oxamido Complex Ligand
The title complex, [Cu(NiL)2(H2O)2](ClO4)2, has been obtained by self-assembly, where [NiL] is a new macrocyclic oxamido complex ligand. In the crystal, a new kind of supramolecular interaction between the carbon...
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Article
Theoretical calculations of95Mo-NMR chemical shifts for compounds [MoO4−n S n ]2−
Theoretical calculation of95Mo-NMR chemical shifts for [MoO4−n S n ]2− (n=0−4) compounds is reported here for the first time on the basis of Fenske-Hall method and Sum-Over-State...