Synthesis and Crystal Structural Characterization of Mixed-Ligand Cadmium(II) Complexes of 3-Triphenylphosphoniopropanoate and N ,N ,N′ ,N′-Tetramethylethylenediamine (tmen)

1997 ◽  
Vol 50 (1) ◽  
pp. 79 ◽  
Author(s):  
Song-Lin Li ◽  
Thomas C. W. Mak
Keyword(s):  
Nitrogen Atom ◽  
Mixed Ligand ◽  
The Other ◽  
Coordination Environment ◽  
Space Group ◽  
X Ray ◽  
Distorted Octahedral ◽  
Crystal Structural ◽  
Distorted Octahedral Coordination Environment

Two mixed-ligand cadmium(II) complexes have been synthesized from the reaction of 3-triphenyl- phosphoniopropanoate, Ph3P+ (CH2)2CO2¯, and Me2N(CH2)2NMe2 (abbreviated as tmen) with Cd(ClO4)2.x H2O and CdI2, and structurally characterized by single-crystal X-ray analysis: [Cd { Ph3P(CH2)2CO2 } 2(tmen)(H2O)] (ClO4)2.2H2O (1), space group P -1 with a 13·461(5), b 13·694(5), c 18·229(4) Å, α 92·34(2), β 110·51(2), γ 117·44(2)° and Z 2; [CdI2 { Ph3P(CH2)2CO2 } (tmen)] (2), space group P 21/c with a 16·768(6), b 11·741(3), c 16·915(5) Å, β 112·28(2)° and Z 4. In complex (1), the cadmium(II) atom is in a distorted pentagonal bipyramidal environment with two chelated betaine ligands and one nitrogen atom of the chelated tmen ligand defining the equatorial plane, and an aqua ligand and the other tmen nitrogen atom occupying the axial positions. One of the betaine ligands acts in the symmetric and the other in the asymmetric chelate mode. In complex (2), the distorted octahedral coordination environment about the cadmium(II) atom involves a chelated tmen ligand, an asymmetrically chelated betaine ligand, and two cis-related iodo ligands.

Synthesis and Structural Characterization of the Mixed Ligand Complex [Cu(Hml)2(Phen)] · 2 H2O (H2ml = 2-Methyllactic Acid)

2003 ◽  
Vol 58 (1) ◽  
pp. 151-154 ◽  
Author(s):  
Rosa Carballo ◽  
Berta Covelo ◽  
Ezequiel M. Vázquez-Lópeza ◽  
Alfonso Castiñeiras ◽  
Juan Niclós
Keyword(s):  
Magnetic Measurements ◽  
Mixed Ligand Complex ◽  
Three Dimensional ◽  
Mixed Ligand ◽  
Water Molecules ◽  
Ligand Complex ◽  
X Ray ◽  
Dimensional Network ◽  
Distorted Octahedral

Abstract A new mixed-ligand complex of copper(II) with 1,10-phenanthroline and 2-methyllactate was prepared. [Cu(HmL)2(phen)] ·2H2O (where HmL = monodeprotonated 2-methyllactic acid) was characterized by elemental analysis, IR, electronic and EPR spectroscopy, magnetic measurements at room temperature, thermogravimetric analysis and X-ray diffractometry. The copper atom is in a tetragonally distorted octahedral environment and the 2-methyllactato ligand is bidentately chelating. The presence of lattice water molecules mediates the formation of a three-dimensional network.

Preparation, Spectral and Structural Characterization of Two Polymeric 1:1 Mixed Ligand Complexes of Copper(II) Azide with 4-Methylquinoline and 2-Methylpyridine

1991 ◽  
Vol 46 (5) ◽  
pp. 687-692 ◽  
Author(s):  
Mohamed A. S. Goher ◽  
Franz A. Mautner
Keyword(s):  
Columnar Structure ◽  
Mixed Ligand ◽  
Mixed Ligand Complexes ◽  
Polymeric Complex ◽  
Bridging Ligands ◽  
Space Group ◽  
X Ray ◽  
X Ray Crystallography ◽  
Centrosymmetric Dimers

Two 1:1 mixed ligand complexes of copper(II) azide with substituted quinoline and pyridine, namely catena di-μ(1,1)-azido-(4-methylquinoline)copper(II) (1) and catena di-μ(1,3)-azido-[di-μ(1,1)-azido-bis(2-methylpyridine)dicopper(II)] (2) have been prepared and characterized by X-ray crystallography.Crystal data: 1, C10H9N7Cu, space group P21/c, a = 577.8(2), b = 2202.3(5), c = 919.9(2) pm, β = 93.92(2)°, Ζ = 4, and R = 0.035 for 1293 observed MoKa data; 2, C6H7N7Cu, space group P21/a, a = 823.7(2), b = 1303.8(4), c = 895.3(3) pm, β = 112.23(2)°, Ζ = 4, and R = 0.022 for 2133 observed ΜοΚα diffractometer data. In the structure of 1, the Cu(II) has a strongly distorted trigonal bypyramidal coordination, where both azido groups function as μ(1,1) bridging ligands resulting in a columnar structure along the a axis. The polymeric complex 2 has a less distorted square pyramidal structure; one half of the azide groups act as μ(1,1) bridging ligands to form centrosymmetric dimers. These dimeric units are further connected by the remaining μ(1,3) bridging azido groups to form layers within the ab-plane. Infrared and electronic spectral data are also presented and discussed.

scholarly journals cis-Bromidobis(1,2-diaminoethane-κ2 N,N′)(ethylamine-κN)cobalt(III) dibromide

IUCrData ◽  
2018 ◽  
Vol 3 (6) ◽  
Author(s):  
S. Manimaran ◽  
M. Manjunathan ◽  
E. Govindan ◽  
K. Sambathkumar ◽  
K. Anbalagan
Keyword(s):  
Hydrogen Bonds ◽  
Complex Cation ◽  
Three Dimensional ◽  
Title Complex ◽  
Coordination Environment ◽  
X Ray ◽  
Distorted Octahedral Coordination ◽  
Dimensional Network ◽  
Distorted Octahedral ◽  
Distorted Octahedral Coordination Environment

In the title complex, [CoBr(C2H7N)(C2H8N2)2]Br2, the CoIII centre has a distorted octahedral coordination environment, and is surrounded by four N atoms in the equatorial plane, with an additional N atom and the Br atom occupying the axial positions. The complex is isostructural with the Cl compound for which the X-ray structure has also been reported [Anbalagan, Mahalakshmi & Ganeshraja (2011). J. Mol. Struct. 1005, 45–52]. In the crystal, the complex cation and the two counter-anions are linked via N—H...Br hydrogen bonds, forming a three-dimensional network.

Reaktionen von 1,2,4-Thiadiazol-3,5-dicarbonitril mit Schwefelchloriden: Röntgenstrukturanalyse von S3(CN)4Cl2·AsF5 und S3(CN)8Cl2/Reactions of 1,2,4-Thiadiazol-3,5-dicarbonitrile with Sulfur Chlorides: X-Ray Crystal Structure Analysis of S3(CN)4Cl2·A sF5 and S3(CN)8Cl2

1986 ◽  
Vol 41 (2) ◽  
pp. 162-166 ◽  
Author(s):  
Herbert W. Roesky ◽  
Jörg Sundermeyer ◽  
Jürgen Schimkowiak ◽  
Thomas Gries ◽  
Mathias Noltemeyer ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Nitrogen Atom ◽  
Sulfur Atom ◽  
Experimental Error ◽  
Crystal Structure Analysis ◽  
The Other ◽  
Space Group ◽  
X Ray ◽  
Ring Nitrogen

The reactions between 1,2,4-thiadiazol-3,5-dicarbonitrile, S(CN)4, and sulfur chlorides (SCl2 and S2Cl2) in the presence of Adogen® 464 (Aldrich) proceeds with formation of S3(CN)4Cl2 (1) and S3(CN)8Cl2 (2). These main products were characterized by X-ray structure determination of an adduct 1a and of 2. This adduct 1a was obtained by addition of the Lewis acid AsF5 in liquid SO2. 1a crystallizes with one SO2 molecule in the space group P21/n with a = 1177.3(2), b = 1082.8(1), c = 1255.3(5) pm, β = 109.73(3)°, Z = 4, V = 1.5061 nm3. It contains two five-membered rings connected by a nitrogen atom. AsF5 is coordinated to one of the ring nitrogen atoms [N(1)] adjacent to the sulfur atom S(1) and C(1)Cl-group. The other ring contains an S(2)-S(3) bond of length 207.7(4) pm. The rings are planar within experimental error. 2 crystallizes in the space group P21/n with a = 782.12(6), b = 1498.1(5), c = 1217.8(2) pm, β = 102.43(1)°, Z = 4, V = 1.3934 nm3. 2 is formed by addition of one molecule of SCl2 to two molecules of S(CN)4.

scholarly journals Synthesis and Characterization of Bis(4-methylbenzylammonium) Tetrachloridocadmate(II)

2011 ◽  
Vol 2011 ◽  
pp. 1-7 ◽  
Author(s):  
R. Kefi ◽  
M. Zeller ◽  
F. Lefebvre ◽  
C. Ben Nasr
Keyword(s):  
Synthesis And Characterization ◽  
X Ray Diffraction ◽  
Orthorhombic Space Group ◽  
Hybrid Compound ◽  
Coordination Environment ◽  
X Ray ◽  
Organic Hybrid ◽  
Distorted Octahedral ◽  
Cp Mas Nmr

The crystal structure of the new inorganic-organic hybrid compound [4-CH3C6H4CH2NH3]2[CdCl4] has been determined by single crystal X-ray diffraction. The compound crystallizes in the orthorhombic space group Pnma with lattice parameters a=10.721(2), b=33.986(6), c=5.326(1) Å, β=97.222(1)°, V=1940.8(7) Å3, and Z=4. The framework of the title compound is built upon layers parallel to (010) made up from corner-sharing CdCl6 octahedra. 4-Methylbenzylammonium cations are situated between the layers and connect them via an N–H⋯Cl hydrogen bonding network. The Cd atom is located on an inversion centre, and the coordination environment is described as distorted octahedral. Solid state 13C CP-MAS NMR spectroscopy is in agreement with the X-ray structure. DFT calculations allow the attribution of the carbon peaks to the independent crystallographic sites. Thermal analysis and infrared spectroscopy were also used to characterize the complex.

scholarly journals cis-Bromido(n-butylamine-κN)bis(ethene-1,2-diamine-κ2 N,N′)cobalt(III) dibromide

IUCrData ◽  
2018 ◽  
Vol 3 (7) ◽  
Author(s):  
M. Manjunathan ◽  
S. Manimaran ◽  
K. Anbalagan ◽  
K. Sambathkumar ◽  
E. Govindan
Keyword(s):  
Complex Cation ◽  
Three Dimensional ◽  
The Other ◽  
Coordination Environment ◽  
Distorted Octahedral Coordination ◽  
Dimensional Network ◽  
Distorted Octahedral ◽  
Two Component ◽  
Ethylenediamine Ligand ◽  
Distorted Octahedral Coordination Environment

In the title compound, [CoBr(C2H8N2)2(C4H11N)]Br2, the cobalt(III) ion has a distorted octahedral coordination environment and is surrounded by four N atoms in the equatorial plane made up of three N atoms from the two ethylenediamine ligands and the remaining N from the n-butyl substituent, with the other N atom from the ethylenediamine ligand and the Br atom occupying the axial positions. In the crystal, the complex cation and the two counter-anions are linked via N—H...Br and C—H...Br hydrogen bonds, forming a three-dimensional network. The crystal studied was refined as a two-component inversion twin.

Structural Characterization of a [Cl3CuL]- (L=Nitrogen Base) Species. A Novel Coordination Environment for Copper(II)

1985 ◽  
Vol 38 (5) ◽  
pp. 669 ◽  
Author(s):  
PC Healy ◽  
C Pakawatchai ◽  
AH White
Keyword(s):  
Crystal Structure ◽  
Single Crystal ◽  
Least Squares ◽  
Structural Characterization ◽  
The Other ◽  
X Ray Diffraction ◽  
Nitrogen Base ◽  
Coordination Environment ◽  
X Ray

The crystal structure of [C13H10N] [CuCl3(C13H9N)].H2O(C13H9N ≡ acridine ) has been determined by single-crystal X-ray diffraction methods at 295 K, being refined by least squares to a residual of 0.037 for 1942 independent 'observed' reflections. Crystals are triclinic, Pī , a 16.27(2), b 10.080(8), c 7.236(5) Ǻ, α 88.85(6), β 82.68(8), γ 81.12(9)°, Z 2. The metal atom stereochemistry is unusual, being of pseudo-m symmetry; one of the chlorine atoms is coplanar with the copper and the acridine [Cu- Cl 2.237(2) Ǻ, N-Cu- Cl 143.5(1)°], with the other two disposed to either side of that plane [Cu- Cl 2.252(3), 2.243(2) Ǻ; Cl-Cu-Cl 145.62(7)°]. Cu-N is 2.018(5) Ǻ.

N-Chloronitrenokomplexe des Wolframs: Synthesen und Kristallstrukturen von PPh3Me[Cl5W(NCl)] und (PPh4)3{[Cl5W(NCl)]2Cl} • CCl4 • 4CH3CN / N-Chloro-Nitrene Complexes of Tungsten: Syntheses and Crystal Structures of PPh3Me[Cl5W(NCl)] and (PPh4)3{[Cl5W(NCl)]2Cl} CCl4-4CH3CN

1988 ◽  
Vol 43 (12) ◽  
pp. 1633-1638 ◽  
Author(s):  
Astrid Gorge ◽  
Ute Patt-Siebel ◽  
Ulrich Müller ◽  
Kurt Dehnicke
Keyword(s):  
Nitrogen Atom ◽  
Bond Angle ◽  
Chloride Ion ◽  
Tungsten Atom ◽  
Space Group ◽  
X Ray ◽  
Octahedral Environment ◽  
Distorted Octahedral ◽  
Structure Determinations ◽  
Moisture Sensitive

Abstrct The N-chloro-nitrene complexes PPh3Me[Cl5W(NCl)] and (PPh4)3{ [Cl5W(NCl)]2Cl} • CCl4 • 4CH3CN were prepared by the reaction of [CI4W(NCl)]2 with [PPh3Me]Ci in CH2Cl2 and with [PPh4]Cl in CH3CN. respectively, followed by precipitation with CCl4. Both compounds form red, moisture-sensitive crystals, which were characterized by IR spectroscopy as well as by X-ray structure determinations. PPh3Me[CUW(NCl)]: space group P1̄, Z = 2, a = 862.7(3), b = 1108.4(2), c = 1411.0(5) pm. a = 71.74(3)°, β = 76.78(3)°, y = 77.55(2)° (at 18 °C); 2843 unique observed reflexions, R = 0.042. The compound consists of ions PPh3Me+ and [Cl5W(NCl)]-, in which the tungsten atom has a distorted octahedral environment of five chlorine atoms and the nitrogen atom of the N-chloro-nitrene ligand with bond distances WN = 169 pm and N-Cl = 160 pm. bond angle WNCl = 175°. (PPh4)3{[Cl5W(NCl)]2Cl} • CCl4• 4CH3CN: space group P4/n, Z = 2, a = 1298.2(8). c = 2720.4(7) pm (at 17 °C); (1979 unique observed reflexions. R = 0.096). The compound contains cations PPh4+ and anions {[CI5W(NCl)]2Cl}3-, in which two [Cl5W(NCl)]- ions are bridged by a chloride ion to form the linear unit [Cl5W≡N-Cl ··· Cl -Cl-N≡WCl5]3- with Cl ··· Cl-contactsof 288 and 278 pm

Synthesis and structures of photoactive manganese–carbonyl complexes derived from 2-(pyridin-2-yl)-1,3-benzothiazole and 2-(quinolin-2-yl)-1,3-benzothiazole

2017 ◽  
Vol 73 (4) ◽  
pp. 357-361 ◽  
Author(s):  
Jenny Stenger-Smith ◽  
Indranil Chakraborty ◽  
Samantha Carrington ◽  
Pradip Mascharak
Keyword(s):  
Carbonyl Complexes ◽  
Blue Fluorescence ◽  
Release Rates ◽  
Release Process ◽  
Coordination Environment ◽  
Metal Centers ◽  
Distorted Octahedral ◽  
Manganese Carbonyl ◽  
Distorted Octahedral Coordination Environment

PhotoCORMs (photo-active CO-releasing molecules) have emerged as a class of CO donors where the CO release process can be triggered upon illumination with light of appropriate wavelength. We have recently reported an Mn-based photoCORM, namely [MnBr(pbt)(CO)3] [pbt is 2-(pyridin-2-yl)-1,3-benzothiazole], where the CO release event can be tracked within cellular milieu by virtue of the emergence of strong blue fluorescence. In pursuit of developing more such trackable photoCORMs, we report herein the syntheses and structural characterization of two MnI–carbonyl complexes, namely fac-tricarbonylchlorido[2-(pyridin-2-yl)-1,3-benzothiazole-κ2 N,N′]manganese(I), [MnCl(C12H8N2S)(CO)3], (1), and fac-tricarbonylchlorido[2-(quinolin-2-yl)-1,3-benzothiazole-κ2 N,N′]manganese(I), [MnCl(C16H10N2S)(CO)3], (2). In both complexes, the MnI center resides in a distorted octahedral coordination environment. Weak intermolecular C—H...Cl contacts in complex (1) and Cl...S contacts in complex (2) consolidate their extended structures. These complexes also exhibit CO release upon exposure to low-power broadband visible light. The apparent CO release rates for the two complexes have been measured to compare their CO donating capacity. The fluorogenic 2-(pyridin-2-yl)-1,3-benzothiazole and 2-(quinolin-2-yl)-1,3-benzothiazole ligands provide a convenient way to track the CO release event through the `turn-ON' fluorescence which results upon de-ligation of the ligands from their respective metal centers following CO photorelease.

Distorted chiolite crystal structures of α-Na5M3F14 (M=Cr,Fe,Ga) studied by X-ray powder diffraction

2003 ◽  
Vol 18 (2) ◽  
pp. 128-134 ◽  
Author(s):  
A. Le Bail ◽  
A.-M. Mercier
Keyword(s):  
Crystal Structures ◽  
Powder Diffraction ◽  
Room Temperature ◽  
Rietveld Refinements ◽  
Space Group ◽  
X Ray ◽  
Precise Characterization

The crystal structures of the chiolite-related room temperature phases α-Na5M3F14 (MIII=Cr,Fe,Ga) are determined. For all of them, the space group is P21/n, Z=2; a=10.5096(3) Å, b=7.2253(2) Å, c=7.2713(2) Å, β=90.6753(7)° (M=Cr); a=10.4342(7) Å, b=7.3418(6) Å, c=7.4023(6) Å, β=90.799(5)° (M=Fe), and a=10.4052(1) Å, b=7.2251(1) Å, c=7.2689(1), β=90.6640(4)° (M=Ga). Rietveld refinements produce final RF factors 0.036, 0.033, and 0.035, and RWP factors, 0.125, 0.116, and 0.096, for MIII=Cr, Fe, and Ga, respectively. The MF6 polyhedra in the defective isolated perovskite-like layers deviate very few from perfect octahedra. Subtle octahedra tiltings lead to the symmetry decrease from the P4/mnc space group adopted by the Na5Al3F14 chiolite aristotype to the P21/n space group adopted by the title series. Facile twinning precluded till now the precise characterization of these compounds.

Sign in / Sign up

Export Citation Format

Share Document