An imidazole-based P–N bridging ligand and its binuclear copper(I), silver(I) and palladium(I) complexes: synthesis, characterizations and X-ray structures

Polyhedron ◽  
2001 ◽  
Vol 20 (7-8) ◽  
pp. 627-633 ◽  
Author(s):  
M Abdul Jalil ◽  
Tomokazu Yamada ◽  
Shuhei Fujinami ◽  
Takaharu Honjo ◽  
Hiroaki Nishikawa
Keyword(s):  
Binuclear Copper ◽  
X Ray ◽  
Bridging Ligand

scholarly journals Single-crystal ESR and X-Ray Crystallographical Studies of a Binuclear Copper(II) Complex with a Coaxially Stacked Square-pyramidal Geometry

1984 ◽  
Vol 57 (6) ◽  
pp. 1454-1458 ◽  
Author(s):  
Yuji Kajikawa ◽  
Tosio Sakurai ◽  
Nagao Azuma ◽  
Shizue Kohno ◽  
Sei Tsuboyama ◽  
...  
Keyword(s):  
Single Crystal ◽  
Binuclear Copper ◽  
X Ray ◽  
Pyramidal Geometry ◽  
Square Pyramidal Geometry

Honeycomb molecular network based upon a hydrate of 4,6-dichlororesorcinol and the photoproduct rtct-tetrakis(pyridin-4-yl)cyclobutane

2021 ◽  
Vol 77 (2) ◽  
pp. 111-115
Author(s):  
Carlos L. Santana ◽  
Jessica D. Battle ◽  
Daniel K. Unruh ◽  
Ryan H. Groeneman
Keyword(s):  
Hydrogen Bonds ◽  
Water Molecule ◽  
Single Crystal ◽  
Organic Materials ◽  
Molecular Network ◽  
Molecular Solids ◽  
X Ray ◽  
Bridging Ligand ◽  
Metal Organic ◽  
Cyclobutane Ring

The formation of a self-interpenetrated honeycomb molecular network based upon 4,6-dichlororesorcinol (4,6-diCl res), a water molecule, and the photoproduct rtct-tetrakis(pyridin-4-yl)cyclobutane ( rtct -TPCB) is reported. Interestingly, only three of the four pyridine rings on the central cyclobutane ring are found to engage in O—H...N hydrogen bonds with either the 4,6-diCl res or an included water molecule, resulting in a three-connected net. Notably, the solid (4,6-diCl res)·( rtct -TPCB)·(H2O), C6H4Cl2O2·C24H20N4·H2O, contains channels that run along the crystallographic b axis, which are found to be interpenetrated. Although rtct -TPCB has been employed as a bridging ligand in the formation of numerous metal–organic materials, surprisingly neither the single-component X-ray structure nor any multi-component molecular solids based upon this stereoisomer have been reported previously. Lastly, the single-crystal X-ray structure of the photoproduct rtct -TPCB is also reported.

A new bridging ligand in dinuclear iron carbonyl species. Synthesis, properties, and x-ray structure determination of xanthate-hexacarbonyldiiron complexes

1981 ◽  
Vol 20 (12) ◽  
pp. 4351-4355 ◽  
Author(s):  
Henri. Patin ◽  
Gerard. Mignani ◽  
Alain. Benoit ◽  
Jean Yves. Le Marouille ◽  
Daniel. Grandjean
Keyword(s):  
Structure Determination ◽  
Iron Carbonyl ◽  
X Ray ◽  
Bridging Ligand ◽  
Dinuclear Iron ◽  
Synthesis Properties ◽  
Carbonyl Species

Binuclear copper(II) complexes of the tetradentate ligand 1,4-di(2′-pyridyl)aminophthalazine: some novel five-coordinate derivatives

1969 ◽  
Vol 47 (22) ◽  
pp. 4141-4152 ◽  
Author(s):  
L. K. Thompson ◽  
V. T. Chacko ◽  
J. A. Elvidge ◽  
A. B. P. Lever ◽  
R. V. Parish
Keyword(s):  
Room Temperature ◽  
Principal Series ◽  
Magnetic Data ◽  
Binuclear Copper ◽  
Neutral Form ◽  
Deprotonated Form ◽  
Copper Salts ◽  
X Ray ◽  
Anionic Ligand ◽  
Aromatic Carboxylate

Reaction of the title ligand (L) with copper salts leads to the formation of three principal series of compounds, LCu2X3(OH)•H2O (X = Cl, Br), LCu2(RCO2)3, and LCu2(RCO2)4, where RCO2 represents various aliphatic and aromatic carboxylate species. Magnetic data, electronic spectroscopic data both at room temperature and at −196 °C, infrared spectra, and microanalytical data are correlated to reveal that these complexes contain a binuclear copper-copper system in which the copper atoms are 5-coordinate and square pyramidal. Brief details are presented of an X-ray structural analysis of the chloride complex confirming the structure proposed.The ligand forms complexes both in its neutral form and in an anionic deprotonated form. The ultraviolet spectra of the complexes distinguish these modes of bonding. The electronic spectra are discussed in terms of the 5-coordinate square pyramidal copper chromophore deemed to be present. In the complex L2Cu, the copper atom has a trigonally distorted 6-coordinate environment with tridentate anionic ligand.

Structure and magnetism in a hydroxy bridged binuclear copper(II) system with a "tunable" binuclear centre

1983 ◽  
Vol 61 (3) ◽  
pp. 579-583 ◽  
Author(s):  
Laurence K. Thompson
Keyword(s):  
Molecular Structure ◽  
Single Crystal ◽  
Coordination Geometry ◽  
Antiferromagnetic Exchange ◽  
X Ray Diffraction ◽  
Binuclear Copper ◽  
Space Group ◽  
X Ray ◽  
Oxygen Bridge ◽  
Copper Coordination

The molecular structure of [Cu2(PAP)(OH)(IO3)3]•4H2O (PAP = 1,4-di(2′-pyridyl)aminophthalazine) has been determined by single crystal X-ray diffraction. [Cu2(PAP)(OH)(IO3)3]•4H2O belongs to the space group P21/c with a = 7.266(1), b = 15.269(1), c = 25.870(1) Å, β = 96.40(I)°, V = 2852.2 Å3, Z = 4. The copper coordination geometry lies between a square pyramid and a trigonal bipyramid and the two copper(II) centres are bridged by three groups: N2 (phthalazine), hydroxide, and bidentate iodate, in a structure which is analogous to that reported for [Cu2(PAP)(OH)Cl3]•1.5H2O. Replacing the chlorine bridge by iodate has the effect of forcing the two metal centres further apart, thus creating a larger Cu—O—Cu bridge angle. This increase in oxygen bridge angle (101° to 114°) is also reflected in the enhanced antiferromagnetic exchange (−2J(Cl) = 201 cm−1, −2J(IO3) = 335 cm−1). Other groups of varying size (e.g. Br, NO3, SO4) can act as bridges between the two copper centres in systems of this sort with the resultant variation in copper–copper separation and oxygen bridge angle.

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