Tetraacetylethane Dianion (Tae) As a Bridging Ligand for Molecular Square Complexes:  CoII4(Tae)4(Dpa)4, Dpa = Di-2-pyridylamine, a Chiral Molecular Square in the Solid State

1998 ◽  
Vol 120 (36) ◽  
pp. 9398-9399 ◽  
Author(s):  
Yousheng Zhang ◽  
Suning Wang ◽  
Gary D. Enright ◽  
Steven R. Breeze
Keyword(s):  
Solid State ◽  
Bridging Ligand ◽  
Molecular Square

Imidazolato-bridged complexes of copper(II)

1970 ◽  
Vol 23 (10) ◽  
pp. 1973 ◽  
Author(s):  
ME Bridson ◽  
WR Walker
Keyword(s):  
Aqueous Solution ◽  
Solid State ◽  
Aqueous Solutions ◽  
Electronic Spectra ◽  
Empirical Formula ◽  
Spectroscopic Data ◽  
Bridging Ligand

Compounds of the empirical formula Cu(HIm)2(Im)X [where X = NO3-, ClO4-, Cl-, Br-, and I-; HIm = imidazole and Im- = anion of imidazole] have been prepared and investigated. Evidence for the imidazolato anion acting as a bridging ligand in the solid state is based on magnetic and spectroscopic data. The electronic spectra of aqueous solutions of tetrakisimidazolecopper(11) compounds suggest the presence of the binuclear hydroxy-bridged cation (1) : (See diagram in article) which is also furnished by the imidazolato-bridged species in aqueous solution.

Self-Assembly of a Charge-Neutral Molecular Square

2004 ◽  
Vol 57 (5) ◽  
pp. 409 ◽  
Author(s):  
Mohammad Akbar Ali ◽  
Paul V. Bernhardt ◽  
Chong Lee Kiem ◽  
Aminul Huq Mirza
Keyword(s):  
Molecular Weight ◽  
Solid State ◽  
Self Assembly ◽  
1H Nmr Spectroscopy ◽  
The Self ◽  
State Structure ◽  
X Ray ◽  
X Ray Crystallography ◽  
A Charge ◽  
Molecular Square

Complexation of cadmium(II) by the ditopic (bis-tridentate) thiocarbazone ligand 1,5-bis(6-methyl-2-pyridyl- methylene)thiocarbonohydrazide, H2L1, results in the self-assembly of a charge-neutral 2 × 2 molecular grid, [Cd4(L1)4], comprising four metals and four ligands in an interlocked cyclic array. The solid-state structure of this tetramer has been established by X-ray crystallography and in solution by 1H NMR spectroscopy. The presence of lower molecular weight oligomers was identified by both NMR and ESI-MS.

Self-organized Tetranickel(II) Molecular Square with Imidazolinyl-imidazole Bridging Ligand

2018 ◽  
Vol 47 (6) ◽  
pp. 773-775
Author(s):  
Hajime Kamebuchi ◽  
Tomoaki Sugaya ◽  
Ryosuke Shiga ◽  
Hiroki Murakami ◽  
Makoto Tadokoro
Keyword(s):  
Bridging Ligand ◽  
Self Organized ◽  
Molecular Square

Three isomorphous two-dimensional coordination polymers generated from a benzimidazole bridging ligand and ZnX2(X= Cl, Br and I)

2013 ◽  
Vol 69 (4) ◽  
pp. 367-371
Author(s):  
Yue-Feng Zhang ◽  
Jian-Ping Ma ◽  
Qi-Kui Liu ◽  
Yu-Bin Dong
Keyword(s):  
Solid State ◽  
Benzoic Acid ◽  
Coordination Polymers ◽  
Room Temperature ◽  
Three Dimensional ◽  
Luminescent Properties ◽  
Red Shift ◽  
Two Dimensional ◽  
Π Interactions ◽  
Bridging Ligand

A novel bridging asymmetric benzimidazole ligand, 4-{2-[3-(pyridin-4-yl)phenyl]-1H-benzimidazol-1-ylmethyl}benzoic acid, was used to construct three isomorphous two-dimensional coordination polymers, namelycatena-poly[chlorido(μ3-4-{2-[3-(pyridin-4-yl)phenyl]-1H-benzimidazol-1-ylmethyl}benzoato)zinc(II)], [Zn(C26H18N3O2)Cl]n, (I), and the bromide, (II), and iodide, (III), analogues. Neighbouring two-dimensional networks are stacked into three-dimensional frameworksviainterlayer π–π interactions. The luminescent properties of (I)–(III) were investigated and they display an obvious red-shift in the solid state at room temperature.

scholarly journals Synthesis, characterization and thermogravimetric study of Cu(II) adducts with 3- and 4-amino-1,2,4-triazole, 2-mercaptothiazoline and 2-mercaptopyridine

2006 ◽  
Vol 71 (12) ◽  
pp. 1289-1300 ◽  
Author(s):  
Moamen Refat ◽  
Farias de
Keyword(s):  
Infrared Spectroscopy ◽  
Solid State ◽  
Elemental Analysis ◽  
Covalent Character ◽  
Thermogravimetric Study ◽  
Bridging Ligand ◽  
Solid State Route ◽  
Ability To Act ◽  
Metal Ligand ◽  
Ligand Bond

The adducts CuCl2?(3amt), CuCl2?2(3amt)?2H2O, CuCl2?3(3amt), CuCl2?(4amt), CuCl2?2(4amt), CuCl2?3(4amt)?2H2O, CuCl2?(2mct)?H2O, CuCl2?2(2mct)?2.5H2O, CuCl2?3(2mct)?2H2O, CuCl2?(2mcp) and CuCl2?2(2mcp)?H2O, where 3-amino-1,2,4-triazole = 3amt, 4-amino-1,2,4-triazole = 4amt, 2-mercaptothiazoline = 2mct and 2-mercaptopyridine = 2mcp, were synthesized by a solid state route and characterized by CHN elemental analysis and infrared spectroscopy. A thermogravimetric study was also performed. It was verified that 4amp is a molecule with a higher ability to act as a bridging ligand in comparison with 3amp. It was also found that, for all compounds, the mono adducts were the most thermally stable ones. Such a fact is in agreement with a higher ionic and covalent character of the metal-ligand bond in surch compounds. .

scholarly journals Synthesis and structural analysis of polynuclear silver(I) complexes with 4,7-phenanthroline

2019 ◽  
Vol 84 (7) ◽  
pp. 689-699 ◽  
Author(s):  
Ivana Stanojevic ◽  
Nada Savic ◽  
Aurélien Crochet ◽  
Katharina Fromm ◽  
Milos Djuran ◽  
...  
Keyword(s):  
Solid State ◽  
Room Temperature ◽  
Volume Ratio ◽  
Spectroscopic Techniques ◽  
X Ray Diffraction ◽  
X Ray ◽  
Bridging Ligand ◽  
Coordination Sites ◽  
Hydrolysis Of

New polynuclear silver(I) complexes, [Ag(CF3SO3)(4,7-phen)(CH3CN)]n (1) and [Ag(PO2F2)(4,7-phen)]n (2), were synthesized by the reaction of 4,7-phenanthroline (4,7-phen) and the corresponding AgX salt (X = CF3SO3 - and PF6 -) in 1:2 mole ratio, respectively, in methanol/acetone (1:1 volume ratio) at room temperature. The characterization of the complexes was established on the basis of elemental microanalysis, IR and NMR (1H and 13C) spectroscopic techniques, while their crystal structures were determined by single-crystal X-ray diffraction analysis. The results of spectroscopic and crystallographic analyses revealed that in these complexes, 4,7-phen behaves as a bridging ligand between two metal ions, while the remaining coordination sites of the Ag(I) ions are occupied by the oxygen atom of CF3SO3 - and an acetonitrile nitrogen atom in 1 or by two oxygen atoms from two PO2F2 -, formed after hydrolysis of PF6 -, in 2. In the solid state, both complexes are coordination polymers in which the geometry around the Ag(I) ions is distorted tetrahedral.

Copper(i), silver(i) and gold(i) complexes of N-heterocyclic carbene-phosphinidene

2015 ◽  
Vol 44 (10) ◽  
pp. 4449-4454 ◽  
Author(s):  
Venkata A. K. Adiraju ◽  
Muhammed Yousufuddin ◽  
H. V. Rasika Dias
Keyword(s):  
Solid State ◽  
Metal Ions ◽  
Bridging Ligand ◽  
Solid State Structures

IMes·PPh serves as a good bridging ligand for group 11 metal ions affording molecules with diverse solid state structures.

Tuning Coordination Environments Through Ligand Redox Chemistry: the Thiol - Disulfide Reaction

2010 ◽  
Vol 63 (9) ◽  
pp. 1334 ◽  
Author(s):  
Edwin C. Constable ◽  
Catherine E. Housecroft ◽  
Markus Neuburger ◽  
Jason R. Price ◽  
Jennifer A. Zampese
Keyword(s):  
Solid State ◽  
Oxidative Coupling ◽  
Sulfonic Acid ◽  
Redox Chemistry ◽  
Methyl Substituent ◽  
State Structure ◽  
Solid State Structure ◽  
Bridging Ligand

Oxidative coupling of 6-(pyridin-2-yl)pyridine-2(1H)-thione yields 1,2-bis(2,2′-bipyridin-6-yl)disulfide (4), which can act as a bis(chelate) to a single zinc(ii) centre. The effects on the solid-state structure of introducing a methyl substituent into each 6-position of 4 have been examined. Ligand 4 functions as a bridging ligand in [Cu2(μ-4)(μ-6)]4+ in which ligand 6 is 1,2-bis(2,2′:6′,2″-terpyridin-4′-yl)disulfide; [Cu2(μ-4)(μ-6)]4+ self-assembles from the components according to the preference shown by copper(ii) for a five-coordinate {Cu(bpy)(tpy)} environment. Reaction of 4 with [Cu(NCMe)4][PF6] leads to a product, tentatively formulated as {[Cu(4)][PF6]}n, which, in air, undergoes oxidation of both copper and ligand to yield [Cu(5)2] (H5 = 2,2′-bipyridine-6-sulfonic acid), the solid state structure of which is presented.

Polynuclear Co(II) and Cu(II) complexes of tetraacetylethane: CuII2(dpa)2(tae)(O2CCF3)2, {[CuII2(dpa)2(tae)(4,4'-bipy)](O2CCF3)2}n, and [CoII2(dpa)4(tae)](O2CCH3)2(H2O)2, dpa = 2,2'-dipyridylamine, tae = tetraacetylethane dianion

1999 ◽  
Vol 77 (8) ◽  
pp. 1424-1435 ◽  
Author(s):  
Yousheng Zhang ◽  
Steven R Breeze ◽  
Suning Wang ◽  
John E Greedan ◽  
N P Raju ◽  
...  
Keyword(s):  
Solid State ◽  
Molecular Sieve ◽  
Three Dimensional ◽  
Chain Structure ◽  
Dinuclear Complex ◽  
Dimensional Structure ◽  
Polymeric Compound ◽  
Bridging Ligand ◽  
Ferromagnetic Exchange ◽  
Hydrogen Bonded

The syntheses and structures of copper(II) and cobalt(II) complexes employing tetraacetylethane as the bridging ligand have been investigated. The reaction of Cu(O2CCF3)2 with tetraacetylethane (tae) and 2,2'-dipyridylamine (dpa) yielded a dinuclear complex CuII2(dpa)2(tae)(O2CCF3)2 (1), which has an extended hydrogen-bonded chain structure in the solid state. The reaction of 4,4'-dipyridyl (4,4'-bipy) with compound 1 resulted in the formation of a polymeric compound {[CuII2(dpa)2(tae)(4,4'-bipy)](O2CCF3)2}n (2), where the dinuclear unit is cross-linked by the 4,4'-dipyridyl ligand. The reaction of Co(O2CCH3)2 with tetraacetylethane and 2,2'-dipyridylamine yielded a helical dinuclear complex [CoII2(dpa)4(tae)](O2CCH3)2(H2O)2 (3), which forms a hydrogen-bonded band architecture in the solid state. The three-dimensional structure of 3 has molecular sieve-like channels that host methanol molecules reversibly. While only either negligible or weak magnetic exchanges appear to be present in compounds 1 and 2, there appears to be a significant ferromagnetic exchange in 3, which is likely caused by orbital orthogonality of the Co(II) ions, as supported by the crystal structure and EHMO calculations.Key words: cobalt, copper, polynuclear, tetraacetylethane complex, magnetism.

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