scholarly journals Structural, Magnetic, and Spectroscopic Characterization of the Pyridine Complexes of Copper(II) Triphenylacetate: A Dimeric Copper(II) Triphenylacetate–Pyridine Complex with Distorted Trigonal Bipyramidal Geometry Around Copper

1991 ◽  
Vol 64 (10) ◽  
pp. 3046-3058 ◽  
Author(s):  
Omar W. Steward ◽  
Michinobu Kato ◽  
Shih-Chi Chang ◽  
Martin Sax ◽  
Chong-Hwan Chang ◽  
...  
Keyword(s):  
Spectroscopic Characterization ◽  
Trigonal Bipyramidal Geometry ◽  
Pyridine Complexes ◽  
Trigonal Bipyramidal ◽  
Pyridine Complex ◽  
Distorted Trigonal Bipyramidal

Synthesis and characterization of tantalum(V) metallaheterocycle (Me2N)3 and chloro-mixed-amide (Me2N)3Ta(Cl)[N(SiMe3)2]

2003 ◽  
Vol 81 (11) ◽  
pp. 1398-1405 ◽  
Author(s):  
Hu Cai ◽  
Xianghua Yu ◽  
Tianniu Chen ◽  
Xue-Tai Chen ◽  
Xiao-Zeng You ◽  
...  
Keyword(s):  
Solid State ◽  
Hydrogen Abstraction ◽  
Synthesis And Characterization ◽  
Amido Complexes ◽  
X Ray ◽  
Trigonal Bipyramidal Geometry ◽  
Trigonal Bipyramidal ◽  
State 1 ◽  
Distorted Trigonal Bipyramidal

A new mixed-amido complex (Me2N)3Ta(Cl)[N(SiMe3)2] (1) was prepared from the reaction of (Me2N)3TaCl2 with 1 equiv. of LiN(SiMe3)2. The reactions of 1 with 1 equiv. of LiN(SiMe3)2 or (Me2N)3TaCl2 with 2 equiv. of LiN(SiMe3)2 gave (Me2N)3[Formula: see text] (2) with a four-membered metallaheterocyclic ring through γ-hydrogen abstraction. In the solid state, 1 adopts a distorted trigonal bipyramidal geometry with the -N(SiMe3)2 and -Cl ligands in the equatorial and axial positions, respectively. The X-ray structure of 2 reveals that it is in a distorted trigonal bipyramidal geometry with a planar metallaheterocyclic ring.Key words: tantalum, γ-hydrogen abstraction, C-H activation, amido complexes, metallacycle.

scholarly journals Di-μ-aqua-bis{diaqua[μ-4-({4-[bis(2-hydroxyethyl)amino]-6-chloro-1,3,5-triazin-2-yl}amino)benzenesulfonato]sodium(I)}

2012 ◽  
Vol 68 (6) ◽  
pp. m847-m848
Author(s):  
Mei Zhang ◽  
Fu-Yu Sun ◽  
Gui-Zhe Zhao ◽  
Ya-Qing Liu
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Three Dimensional ◽  
Water Molecules ◽  
Coordination Geometry ◽  
Trigonal Bipyramidal Geometry ◽  
Trigonal Bipyramidal ◽  
Distorted Trigonal Bipyramidal

In the dinuclear title compound, [Na2(C13H15ClN5O5S)2(H2O)6] n , two Na+ cations, disposed about a centre of inversion, are linked by two bridging water molecules. The coordination geometry is based on an O5 donor set defined by four water molecules and a 4-aminobenzenesulfonate O atom in a distorted trigonal–bipyramidal geometry. In the crystal, significant O—H...O, O—H...N and N—H...O hydrogen bonds lead to the formation of a three-dimensional architecture.

scholarly journals Preparation and Spectroscopic Characterization of trans-Fe(CO)3L1L2 (L1, L2 = Phosphine or Phosphite)

1989 ◽  
Vol 44 (6) ◽  
pp. 641-646 ◽  
Author(s):  
Hidenari Inoue ◽  
Takeshi Kuroiwa ◽  
Tsuneo Shirai ◽  
Ekkehard Fluck
Keyword(s):  
Spectroscopic Characterization ◽  
Coupling Constant ◽  
Positive Slope ◽  
Phosphorus Ligands ◽  
Large Coupling ◽  
Iron Carbonyls ◽  
Trigonal Bipyramidal ◽  
Large Coupling Constant ◽  
Back Donation

The 57Fe Mößbauer spectra of mixed ligand complexes of the type trans-Fe(CO)3L1L2 (L1 = triphenylphosphine or triphenylphosphite and L2 = phosphine or phosphite) show a quadrupolesplitting doublet typical of the disubstituted iron carbonyls in trigonal bipyramidal symmetry. The inverse linear dependence of the isomer shifts on the CO stretching frequencies is interpreted on the basis of the strengthening triple-bond nature of the carbonyl ligands with increasing iron-to-phosphorus π-back donation. A linear correlation, with a positive slope, between the isomer shifts and the quadrupole splittings has revealed that the phosphorus-to-iron σ-donation is offset by the iron-to-phosphorus π-back donation. A correlation between the coordination shifts and the isomer shifts demonstrates that the iron-to-phosphorus π-back donation plays an important role in the Fe-P bond. The relatively large coupling constant of 2J(P,P) reflects a strong interaction between trans-phosphorus ligands through the P-Fe-P bond

[4-(Dimethylamino)pyridine-κN]bis(pentane-2,4-dionato-κ2 O,O′)copper(II)

2006 ◽  
Vol 62 (5) ◽  
pp. m1142-m1143 ◽  
Author(s):  
Leonard F. Lindoy ◽  
John C. McMurtrie ◽  
David Schilter
Keyword(s):  
Title Complex ◽  
Twofold Axis ◽  
Trigonal Bipyramidal Geometry ◽  
Trigonal Bipyramidal ◽  
Distorted Trigonal Bipyramidal

The title complex, [Cu(C5H7O2)2(C7H10N2)], is disposed about a twofold axis and forms a discrete molecule with the metal adopting a distorted trigonal–bipyramidal geometry within an NO4 donor set.

scholarly journals Crystal structure ofcatena-poly[[chlorido(4,4′-dimethyl-2,2′-bipyridine-κ2N,N′)copper(II)]-μ-chlorido]

2015 ◽  
Vol 71 (6) ◽  
pp. 624-627
Author(s):  
Rafaela Nita ◽  
Jeffrey R. Deschamps ◽  
Scott A. Trammell ◽  
D. Andrew Knight
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Title Compound ◽  
Trigonal Bipyramidal Geometry ◽  
Trigonal Bipyramidal ◽  
Bipyridine Ligand ◽  
Cl Atoms ◽  
Cl Atom ◽  
Distorted Trigonal Bipyramidal

The title compound, [CuCl2(C12H12N2)]n, was obtainedviaa DMSO-mediated dehydration of Cu(4,4′-dimethyl-2,2′-bipyridine)copper(II)·0.25H2O. The central CuIIatom is coordinated in a distorted trigonal–bipyramidal geometry by two N atoms of a chelating 4,4′-dimethyl-2,2′-bipyridine ligand [average Cu—N = 2.03 (3) Å] and three Cl atoms, one terminal with a short Cu—Cl bond of 2.2506 (10) Å, and two symmetry-equivalent and bridging bonds. The bridging Cl atom links the CuIIions into chains parallel to [001]viaone medium and one long Cu—Cl bond [2.3320 (10) and 2.5623 (9) Å]. The structure displays both inter- and intramolecular C—H...Cl hydrogen bonding.

scholarly journals Dibromido(dimethyl sulfoxide-κO)(6-methyl-2,2′-bipyridine-κ2N,N′)cadmium

2012 ◽  
Vol 68 (8) ◽  
pp. m1124-m1124 ◽  
Author(s):  
Sadif A. Shirvan ◽  
Sara Haydari Dezfuli
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Dimethyl Sulfoxide ◽  
Title Compound ◽  
Trigonal Bipyramidal Geometry ◽  
Trigonal Bipyramidal ◽  
Bipyridine Ligand ◽  
Distorted Trigonal Bipyramidal

In the title compound, [CdBr2(C11H10N2)(C2H6OS)], the CdIIatom is five-coordinated in a distorted trigonal–bipyramidal geometry by two N atoms from a 6-methyl-2,2′-bipyridine ligand, one O atom from a dimethyl sulfoxide ligand and two Br atoms. An intramolecular C—H...O hydrogen bond occurs. The crystal structure is stabilized by C—H...Br hydrogen bonds and π–π contacts between the pyridine rings [centroid–centroid distances = 3.582 (5) and 3.582 (5) Å].

Synthesis and characterization of octahedral and trigonal bipyramidal transition metal complexes incorporating chelating gallate ligands: crystal and molecular structure of [Me2Ga(N2C5H7)(OCH2CH2NMe2)]Ni[(N2C5H7)2GaMe2]

1980 ◽  
Vol 58 (11) ◽  
pp. 1091-1100 ◽  
Author(s):  
Kenneth S. Chong ◽  
Steven J. Rettig ◽  
Alan Storr ◽  
James Trotter
Keyword(s):  
Molecular Structure ◽  
Transition Metal ◽  
Transition Metal Complexes ◽  
Crystal And Molecular Structure ◽  
Synthesis And Characterization ◽  
Chelating Ligands ◽  
Full Matrix ◽  
Trigonal Bipyramidal ◽  
Distorted Trigonal Bipyramidal

The preparation and physical properties of octahedral and trigonal bipyramidal complexes incorporating the tris-chelating ligands [Me2Ga(N2C5H7)(OCH2CH2NR′2)]− (R′ = H or Me) are described. Crystals of [dimethylbis(3,5-dimethyl-1-pyrazolyl)gallato (N(2),N′(2))][dimethyl (3,5 - dimethyl-1-pyrazolyl) (N,N-dimethylethanolamino(gallato (N(2), O, N(3))]nickel(II) are triclinic, a = 20.8562(11), b = 9.1536(4), c = 8.2798(4) Å, α = 100.204(3), β = 85.513(4), γ = 101.989(3)°, Z = 2, space group [Formula: see text]. The structure was solved by Patterson and Fourier syntheses and was refined by full-matrix least-squares procedures to R = 0.048 and Rw = 0.078 for 5508 reflections with I ≥ 3σ(I). The coordination about the Ni atom is distorted trigonal bipyramidal with the two nitrogen atoms from the Me2Ga(N2C5H7)2 ligand occupying equatorial positions. The tridentate Me2Ga(N2C5H7)(OCH2CH2NMe2) ligand is meridionally coordinated with the oxygen in the equatorial and the two nitrogens in the axial positions. Important bond lengths (corrected for libration) are: Ni—N(eq), 2.005(3) and 2.006(3), Ni—O, 1.993(3), Ni—N(pz—ax), 2.072(3), Ni—N(amino), 2.229(3), Ga—O, 1.913(3), Ga—N, 1.971(3)–1.989(3), and Ga—C, 1.961(10)–1.986(6) Å.

catena-Poly[[triphenyltin(IV)]-μ-6-oxo1,6-dihydropyridine-3-carboxylato]

2006 ◽  
Vol 62 (4) ◽  
pp. m666-m667
Author(s):  
Zhong-Jun Gao ◽  
Han-Dong Yin ◽  
Gang Li ◽  
Da-Qi Wang
Keyword(s):  
Hydrogen Bond ◽  
Title Compound ◽  
Chain Structure ◽  
Infinite Chain ◽  
Trigonal Bipyramidal Geometry ◽  
Trigonal Bipyramidal ◽  
Distorted Trigonal Bipyramidal

The title compound, [Sn(C6H5)3(C6H4NO3)], possesses an infinite chain structure. The SnO2C3 centre has distorted trigonal–bipyramidal geometry with the O atoms in the apical positions. A strong intermolecular N—H...O hydrogen bond results in the formation of double chains.

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