scholarly journals Crystal structure of poly[[μ3-(S)-2-amino-3-hydroxypropanoato]-cis-di-μ-chlorido-caesiumpalladium(II)]

2017 ◽  
Vol 73 (12) ◽  
pp. 1898-1902
Author(s):  
Mohan Madhav Bhadbhade ◽  
Alexander J. Charlson
Keyword(s):  
Crystal Structure ◽  
Amino Acid ◽  
Antifungal Activity ◽  
Anticancer Activity ◽  
Crystal Structures ◽  
Title Compound ◽  
Coordination Environment ◽  
X Ray ◽  
Coordination Sites ◽  
Square Planar

The structure of the title compound, [CsPd(C3H6NO3)Cl2]n, previously shown to have anticancer activity in rodent test systems and recently found to have antifungal activity, has been determined. The Pd centre is in a square-planar coordination environment with two chlorine atoms incispositions and the remaining two coordination sites being coordinated by N and O atoms from deprotonated L-serine. Each of the Cs cations shows ninefold coordination with six chlorine and three O atoms resulting in a coordination environment that is similar to the well known Cs2SO4structure. X-ray crystal structures of only three dichloridopalladium(II)–amino acid complexes have been determined so far and the present paper describes one of those.

scholarly journals trans-Dichloridobis(4-methoxyaniline-κN)palladium(II)

2009 ◽  
Vol 65 (6) ◽  
pp. m673-m673 ◽  
Author(s):  
Volodimir Bon ◽  
Svitlana Orysyk ◽  
Vasyl Pekhnyo
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Planar Geometry ◽  
Coordination Environment ◽  
Square Planar ◽  
A Chain

In the title compound, [PdCl2(C7H9NO)2], the Pd atom is situated on a crystallographic centre of inversion. The coordination environment of the Pd atom shows a slightly distorted square-planar geometry. The crystal structure exhibits weak intermolecular Pd...Cl interactions, with Pd...Cl distances of 3.6912 (6) Å. A chain-like arrangement of molecules realized by intermolecular N—H...Cl hydrogen bonds is observed along [010].

scholarly journals Crystal structure of bis(μ2-4-tert-butyl-2-formylphenolato)-1:2κ3O1,O2:O1;3:4κ3O1,O2:O1-bis(4-tert-butyl-2-formylphenolato)-2κ2O1,O2;4κ2O1,O2-di-μ3-methoxido-1:2:3κ3O;1:3:4κ3O-di-μ2-methoxido-1:4κ2O;2:3κ2O-tetracopper(II)

2015 ◽  
Vol 71 (3) ◽  
pp. 324-326
Author(s):  
Bernhard Eberhard Christian Bugenhagen ◽  
Marc Heinrich Prosenc
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Coordination Sphere ◽  
Title Compound ◽  
Coordination Environment ◽  
Dinuclear Copper ◽  
Tert Butyl ◽  
Hydrogen Bonding Interactions ◽  
Square Planar

The structure of the title compound, [Cu4(CH3O)4(C11H13O2)4], consists of dimeric dinuclear copper(II) complexes oriented around a centre of inversion. Within each dinuclear fragment, the two CuIIatoms are in a distorted square-planar coordination sphere. Two neighbouring fragments are linked by four apical Cu—O contacts, yielding an overall square-pyramidal coordination environment for each of the four CuIIatoms. The molecules are arranged in layers parallel to (101). Non-classical C—H...O hydrogen-bonding interactions are observed between the layers.

scholarly journals Crystal structure of (2-{3-[4-(4′-cyanobiphenyl-4-yloxy)butoxy]pyridin-2-yl-κN}-5-(dodecyloxy)phenyl-κC1)(9-oxotetracos-7-en-7-olato-κ2O,O′)platinum(II)

2014 ◽  
Vol 70 (12) ◽  
pp. m392-m393
Author(s):  
Kaijun Luo ◽  
Hanlin Liu ◽  
Qing Guo ◽  
Daibing Luo
Keyword(s):  
Crystal Structure ◽  
Dihedral Angle ◽  
Title Compound ◽  
Site Occupancy ◽  
Coordination Environment ◽  
Square Planar ◽  
C And N ◽  
Alkane Chain

The central PtIIatom in the title compound, [Pt(C40H47N2O3)(C24H45O2)], has a slightly distorted square-planar coordination environment. The dihedral angle between the plane formed by Pt and the chelating C and N atoms and that formed by Pt and the chelating O atoms is 2.1 (3)°. The angle between the planes of the two rings in the biphenyl-4-carbonitrile unit is 35.1 (5)°. One lateral alkane chain is disordered over two sets of sites with site occupancy factors in a 0.595 (7):0.405 (7) ratio.

Preparation and X-Ray Crystal-Structure of 4,4'-Triselenobis(pent-3-en-2-one)

1988 ◽  
Vol 41 (10) ◽  
pp. 1601 ◽  
Author(s):  
AP Arnold ◽  
KJ Cavell ◽  
AJ Edwards ◽  
BF Hoskins ◽  
EJ Peacock
Keyword(s):  
Crystal Structure ◽  
Title Compound ◽  
Selenium Atom ◽  
Hydrogen Selenide ◽  
Unusual Structure ◽  
Coordination Environment ◽  
Space Group ◽  
X Ray ◽  
X Ray Crystallography ◽  
Sodium Hydrogen

The title compound was prepared by the reaction of sodium hydrogen selenide with 4-chloropent-3-en-2-one. The compound appears unstable with respect to higher oligomers of the SeC (CH3)CHC(CH3)O ( seacac ) unit. X-ray crystallography reveals the unusual structure in which a central 'complexed' selenium atom is coordinated to the two selenium atoms of the seacac ligands which are in their normal cis conformations. The oxygen atoms are uncoordinated and as far removed from the coordination environment of the central selenium atom as possible. Crystals of Se( seacac )2 are orthorhombic with space group P21212, and cell dimension a 9.761(2), b 14.828(3) and c 4.6447(5)Ǻ.

Lewis-Base Adducts of Group 11 Metal(I) Compounds. LIX. Crystal Structure Determinations of Tetrakis(trimethylphosphine)copper(I) Halides and Tetrakis(triphenylphosphine)-copper(I) and -silver(I) Hexafluorophosphates

1990 ◽  
Vol 43 (10) ◽  
pp. 1697 ◽  
Author(s):  
GA Bowmaker ◽  
PC Healy ◽  
LM Engelhardt ◽  
JD Kildea ◽  
BW Skelton ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Single Crystal ◽  
Crystal Structures ◽  
Lewis Base ◽  
X Ray Diffraction ◽  
Coordination Environment ◽  
X Ray ◽  
Bond Lengths ◽  
Cu Complex ◽  
Structure Determinations

The crystal structures of [Cu(Pme3)4]X (X = Cl , Br, I) and of [M(PPh3)4] [PF6] (M = Cu, Ag) have been determined by single-crystal X-ray diffraction methods at 295 K. The former compounds contain nearly tetrahedral [Cu(PMe3)4]+ ions on sites of m symmetry with mean Cu-P bond lengths of 2.270, 2.271 and 2.278 Ǻ for X = Cl , Br and I respectively. The latter compounds contain [M(PPh3)4]+ ions on sites of 3 symmetry. In the M =Ag complex the coordination environment is close to tetrahedral, but in the M =Cu complex the length of the axial Cu-P bond [2.465(2)Ǻ] is significantly shorter than that of the off-axis bonds [2.566(2)Ǻ]. Possible reasons for this are discussed.

Studies via X-ray analysis on intermolecular interactions and energy frameworks based on the effects of substituents of three 4-aryl-2-methyl-1H-imidazoles of different electronic nature and their in vitro antifungal evaluation

2018 ◽  
Vol 74 (11) ◽  
pp. 1447-1458 ◽  
Author(s):  
Mario A. Macías ◽  
Nerith-Rocio Elejalde ◽  
Estefanía Butassi ◽  
Susana Zacchino ◽  
Jaime Portilla
Keyword(s):  
Crystal Structure ◽  
Antifungal Activity ◽  
Crystal Structures ◽  
Intermolecular Interactions ◽  
Acid Base ◽  
Electronic Nature ◽  
Aryl Ring ◽  
X Ray ◽  
Base Properties

The crystal structures of 2-methyl-4-phenyl-1H-imidazole, C10H10N2, (3a), 4-(4-chlorophenyl)-2-methyl-1H-imidazole hemihydrate, C10H9ClN2·0.5H2O, (3b), and 4-(4-methoxyphenyl)-2-methyl-1H-imidazole, C11H12N2O, (3c), have been analyzed. It was found that the electron-donating/withdrawing tendency of the substituent groups in the aryl ring influence the acid–base properties of the 2-methylimidazole nucleus, changing the strength of the intermolecular N—H...N interactions. This behaviour not only influences the crystal structure but also seems to have an important effect on the antifungal activity. Considering the substituent groups, that is, H in (3a), Cl in (3b) and OMe in (3c), the formation of strong N—H...N connections has the probability (3a) > (3b) > (3c), while compound (3c) proves to be more active than (3a) and (3b) at all concentrations against C. neoformans.

scholarly journals Crystal structure of chlorido(piperidine-κN)(quinoline-2-carboxylato-κ2N,O)platinum(II)

2014 ◽  
Vol 70 (7) ◽  
pp. 36-38 ◽  
Author(s):  
Chi Nguyen Thi Thanh ◽  
Ngan Nguyen Bich ◽  
Luc Van Meervelt
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Chloride Anion ◽  
Asymmetric Unit ◽  
Coordination Environment ◽  
Square Planar

The title compound, [Pt(C10H6NO2)Cl(C5H11N)], crystallizes with one molecule in the asymmetric unit. The PtIIcation has a slightly distorted square-planar coordination environment defined by a chloride anion, the quinoline N atom and a carboxylate O atom of the bidentate quinaldate ligand and a piperidine N atom. An intramolecular C—H...Cl hydrogen bond occurs. In the crystal, molecules are stacked into columns along thecaxis by the formation of N—H...Cl and C—H...O hydrogen bonds.

scholarly journals [1,2-Bis(diisopropylphosphanyl)ethane-κ2 P,P′](2-fluoro-N-{[(2-fluorophenyl)azanidyl]carbonyl}anilinido-κ2 N,N′)nickel(II)

IUCrData ◽  
2020 ◽  
Vol 5 (5) ◽  
Author(s):  
Marcos Flores-Alamo ◽  
Francisco J. Perez-Ortiz ◽  
Alma Arevalo ◽  
Juventino J. Garcia
Keyword(s):  
Molecular Structure ◽  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Title Compound ◽  
Title Complex ◽  
Coordination Environment ◽  
Hydrogen Bonding Interactions ◽  
Square Planar ◽  
Derivatives Of

The molecular structure of the title complex, [Ni(C13H8F2N2O)(C14H32P2)] or Ni(oFPU)(dippe), where oFPU is the dianion of bis(2-fluorophenyl)urea and dippe is 1,2-bis(di-isopropylphosphino)ethane, comprises an NiII atom with a distorted square-planar coordination environment (geometry index τ4 = 0.195). One of the fluorophenyl rings of the oFPU ligand is disordered over two sets of sites in an 0.832 (7):0.168 (7) ratio. The crystal structure displays C—H...O and C—H...F hydrogen-bonding interactions, leading to chains with R 2 2(12) motifs extending parallel to [100]. The title compound might be of interest with respect to the production of urea and carbamate derivatives of nickel(II).

3,3’’-Bis(saccharin-6-ylmethyl)-1,1’:3’,1’’-terphenyl – Precursor of A New Tetradendate Bis-bridging Ligand

2012 ◽  
Vol 67 (10) ◽  
pp. 1070-1080 ◽  
Author(s):  
Stefan Buck ◽  
Gerhard Maas
Keyword(s):  
Crystal Structure ◽  
Structure Analysis ◽  
Title Compound ◽  
Crystal Structure Analysis ◽  
X Ray ◽  
Bridging Ligand ◽  
Coordination Sites ◽  
Dinuclear Ruthenium

The title compound (H2tpsac) was synthesized from 6-bromosaccharin and 3,3’’-bis(bromomethyl)- m-terphenyl. The ability of tpsac to serve as a tetradentate bis-bridging ligand was demonstrated by the formation of the dinuclear ruthenium(I,I) complexes [Ru2(CO)5(μ,μ-tpsac)]2, [Ru2(CO)4(μ,μ-tpsac)]n, [Ru2(CO)4(PPh3)2(μ,μ-tpsac)], and [Ru2(CO)5(PPh3)(μ,μ-tpsac)]. An X-ray crystal structure analysis of [Ru2(CO)4(PPh3)2(μ,μ-tpsac)] showed the head-to-tail (or 1,1) arrangement of the two saccharinate coordination sites.

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