scholarly journals 2-Iodoxybenzoic acid ditriflate: the most powerful hypervalent iodine(v) oxidant

2019 ◽  
Vol 55 (54) ◽  
pp. 7760-7763 ◽  
Author(s):  
Mekhman S. Yusubov ◽  
Natalia S. Soldatova ◽  
Pavel S. Postnikov ◽  
Rashid R. Valiev ◽  
Akira Yoshimura ◽  
...  
Keyword(s):  
Single Crystal ◽  
Trifluoromethanesulfonic Acid ◽  
Hypervalent Iodine ◽  
X Ray ◽  
X Ray Crystallography

A new powerful hypervalent iodine(v) oxidant, a ditriflate derivative of 2-iodoxybenzoic acid (IBX), was prepared by the reaction of IBX with trifluoromethanesulfonic acid and characterized by single crystal X-ray crystallography.

scholarly journals Preparation, structure, and reactivity of bicyclic benziodazole: a new hypervalent iodine heterocycle

2018 ◽  
Vol 14 ◽  
pp. 1016-1020 ◽  
Author(s):  
Akira Yoshimura ◽  
Michael T Shea ◽  
Cody L Makitalo ◽  
Melissa E Jarvi ◽  
Gregory T Rohde ◽  
...  
Keyword(s):  
Single Crystal ◽  
Iodine Atom ◽  
Hypervalent Iodine ◽  
Covalent Bonds ◽  
X Ray ◽  
X Ray Crystallography ◽  
Mild Conditions ◽  
Good Solubility ◽  
Efficient Reagent ◽  
Heterocyclic Structure

A new bicyclic organohypervalent iodine heterocycle derivative of benziodazole was prepared by oxidation of 2-iodo-N,N’-diisopropylisophthalamide with m-chloroperoxybenzoic acid under mild conditions. Single crystal X-ray crystallography of this compound revealed a five-membered bis-heterocyclic structure with two covalent bonds between the iodine atom and the nitrogen atoms. This novel benziodazole is a very stable compound with good solubility in common organic solvents. This compound can be used as an efficient reagent for oxidatively assisted coupling of carboxylic acids with alcohols or amines to afford the corresponding esters or amides in moderate yields.

Verfeinerung der Kristallstruktur von Tripalladium-di-tetrathiophospliat Pd3(PS4)2 Refinement of the Crystal Structure of Tripalladium-di-tetrathiophosphate Pda3(PS4)2

1983 ◽  
Vol 38 (4) ◽  
pp. 426-427 ◽  
Author(s):  
Arndt Simon ◽  
Karl Peters ◽  
Harry Hahn
Keyword(s):  
Crystal Structure ◽  
Single Crystal ◽  
Title Compound ◽  
Type Structure ◽  
Tetrahedral Symmetry ◽  
X Ray ◽  
X Ray Crystallography ◽  
Planar Environment

Abstract The structure of the title compound has been determined by X-ray crystallography. The title compound is synthesized from the elements at 600 °C. Its crystal structure, derived from powder data [3] is refined by single crystal diffractometer data. The structure is trigonal (P3̅ml, α = 684.1(1), c = 724.4(1) pm); Pd2+ cations and PS43- anions form a network with an anti-Claudetite (AS2O3) type structure. The PS4 units are distinctly distorted from ideal tetrahedral symmetry. The Pd atoms have a planar environment of 4 S atoms.

scholarly journals Synthesis, Structure, and Antiproliferative Activity of Three Gallium(III) Azole Complexes

2010 ◽  
Vol 2010 ◽  
pp. 1-10 ◽  
Author(s):  
Stergios Zanias ◽  
Giannis S. Papaefstathiou ◽  
Catherine P. Raptopoulou ◽  
Konstantinos T. Papazisis ◽  
Vasiliki Vala ◽  
...  
Keyword(s):  
Ir Spectroscopy ◽  
Single Crystal ◽  
Antiproliferative Activity ◽  
Bioinorganic Chemistry ◽  
Anionic Complex ◽  
X Ray ◽  
X Ray Crystallography ◽  
Mononuclear Complexes ◽  
Human And Mouse ◽  
Antiproliferative Activities

As part of our interest into the bioinorganic chemistry of gallium, gallium(III) complexes of the azole ligands 2,1,3-benzothiadiazole (btd), 1,2,3-benzotriazole (btaH), and 1-methyl-4,5-diphenylimidazole (L) have been isolated. Reaction of btaH or btd withGaBr3orGaCl3resulted in the mononuclear complexes[GaBr3(btaH)2](1) and[GaCl3(btd)2](2), respectively, while treatment ofGaCl3with L resulted in the anionic complex(LH)2[GaCl4](3). All three complexes were characterized by single-crystal X-ray crystallography and IR spectroscopy, while their antiproliferative activities were investigated against a series of human and mouse cancer cell lines.

Synthesis and structural characterization of a magnesium phthalocyanine(3–) anion

2012 ◽  
Vol 16 (01) ◽  
pp. 154-162 ◽  
Author(s):  
Edwin W.Y. Wong ◽  
Daniel B. Leznoff
Keyword(s):  
Absorption Spectrum ◽  
Solid State ◽  
Single Crystal ◽  
Structural Characterization ◽  
Heterometallic Complex ◽  
State Structure ◽  
Solid State Structure ◽  
X Ray ◽  
X Ray Crystallography

The reduction of magnesium phthalocyanine (MgPc) with 2.2 equivalents of potassium graphite in 1,2-dimethoxyethane (DME) gives [K2(DME)4]PcMg(OH)(1) in 67% yield. Compound 1 was structurally characterized using single crystal X-ray crystallography and was found to be a monomeric, heterometallic complex consisting of a μ3-OH ligand that bridges a [MgIIPc3-]- anion to two potassium cations solvated by four DME molecules. An absorption spectrum of 1 confirms the Pc ligand is singly reduced and has a 3–charge. The solid-state structure of 1 does not indicate breaking of the aromaticity of the Pc ligand. Compound 1 is only the second Pc3- complex and the first reduced MgPc to be isolated and structurally characterized.

scholarly journals The Synthesis and Characterization of a Novel One-Dimensional Bismuth (III) Coordination Polymer as a Precursor for the Production of Bismuth (III) Oxide Nanorods

Crystals ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 113
Author(s):  
Younes Hanifehpour ◽  
Babak Mirtamizdoust ◽  
Jaber Dadashi ◽  
Ruiyao Wang ◽  
Mahboube Rezaei ◽  
...  
Keyword(s):  
Single Crystal ◽  
Coordination Compound ◽  
Organic Ligand ◽  
One Dimensional ◽  
X Ray ◽  
X Ray Crystallography ◽  
Oxide Nanorods ◽  
Pure Phase ◽  
3D Framework

A novel Bi (III) coordination compound, [Bi(HQ)(Cl)4]n ((Q = pyridine-4-carbaldehyde thiosemicarbazone), was prepared in this research using a sonochemical technique. SEM, infrared spectroscopy (IR), XRD, and single-crystal X-ray analysis were utilized to analyze the Bi(III) coordination compound. The structure determined using single-crystal X-ray crystallography indicates that the coordination compound is a 1D polymer in solid state and that the coordination number of bismuth (III) ions is six, (BiSCl5), with one S donor from the organic ligand and five Cl donors from anions. It is equipped with a hemidirectional coordination sphere. It is interesting that the ligand has been protonated in the course of the reaction with a Cl- ion balancing the charge. This compound’s supramolecular properties are directed and regulated by weak directional intermolecular interactions. Through π–π stacking interactions, the chains interact with one another, forming a 3D framework. Thermolysis of the compound at 170 °C with oleic acid resulted in the formation of pure phase nanosized Bi (III) oxide. SEM technique was used to examine the morphology and size of the bismuth (III) oxide product produced.

scholarly journals 2-(3,5-Dimethyl-1H-pyrazol-1-yl)thiazolo[4,5-b]pyridine

Molbank ◽  
10.3390/m1077 ◽  
2019 ◽  
Vol 2019 (3) ◽  
pp. M1077
Author(s):  
Lan ◽  
Zheng ◽  
Wang
Keyword(s):  
Nmr Spectroscopy ◽  
Single Crystal ◽  
1H Nmr ◽  
Structure Determination ◽  
1H Nmr Spectroscopy ◽  
Pyrazole Ring ◽  
Hydrogen Atoms ◽  
X Ray ◽  
X Ray Crystallography

The compound 2-(3,5-dimethyl-1H-pyrazol-1-yl)thiazolo[4,5-b]pyridine (1) was synthesized with a yield of 71% by the reaction of 1-(thiazolo[4,5-b]pyridine-2-yl)hydrazine and acetylacetone. The structure was characterized by a single-crystal X-ray structure determination as well as 1H and 13C{1H} NMR spectroscopy. X-ray crystallography on 1 confirms the molecule consists of a pyridine–thiazole moiety and the pyrazole ring, and all non-hydrogen atoms are planar.

scholarly journals 1-[N-Methyl-N-(Phenyl)amino]-3- (4-Methylphenyl)Thiourea

Molbank ◽  
10.3390/m1052 ◽  
2019 ◽  
Vol 2019 (1) ◽  
pp. M1052 ◽  
Author(s):  
Chien Yeo ◽  
Edward Tiekink
Keyword(s):  
Hydrogen Bond ◽  
Solid State ◽  
Hydrogen Bonds ◽  
Single Crystal ◽  
Elemental Analysis ◽  
Title Compound ◽  
Molecular Conformation ◽  
Phenyl Hydrazine ◽  
X Ray ◽  
X Ray Crystallography

The title compound, 1-[N-methyl-N-(phenyl)amino]-3-(4-methylphenyl)thiourea (1), was synthesized by the reaction of 1-methyl-1-phenyl hydrazine and 4-tolyl isothiocyanate, and was characterized by spectroscopy (1H and 13C{1H} NMR, IR, and UV), elemental analysis as well as by single crystal X-ray crystallography. In the solid state, the molecule exists as the thioamide tautomer and features an anti-disposition of the thioamide–N–H atoms; an intramolecular N–H⋯N hydrogen bond is noted. The molecular conformation resembles that of the letter L. In the molecular packing, thioamide-N1–H⋯S1(thione) hydrogen bonds lead to centrosymmetric eight-membered {⋯HNCS}2 synthons. The dimers are assembled into a supramolecular layer in the bc-plane by phenyl- and methyl-C–H⋯π(phenyl) interactions.

Catalyst-Free Synthesis of Diastereomerically Pure 3-Sulfonyl­azetidin-2-ones via Microwave-Assisted Tandem Wolff Rearrangement–Staudinger Cycloaddition

Synthesis ◽  
2020 ◽  
Author(s):  
Mikhail Krasavin ◽  
Judith Synofzik ◽  
Olga Bakulina ◽  
Olga Balabas ◽  
Dmitry Dar’in
Keyword(s):  
Drug Design ◽  
Single Crystal ◽  
Wolff Rearrangement ◽  
X Ray ◽  
Design And Optimization ◽  
X Ray Crystallography ◽  
Microwave Assisted ◽  
Catalyst Free ◽  
Relative Stereochemistry ◽  
Wide Range

A wide range of α-diazo-β-ketosulfones have been applied to thermally promoted tandem Wolff rearrangement – Staudinger [2+2] cycloaddition with imines to give polysubstituted β-lactam sulfones. Dia­stereomerically pure syn-diastereomers were obtained in good yields and the relative stereochemistry was confirmed by single-crystal X-ray crystallography. These findings significantly expand the scope of this transformation, in contrast to substantial limitations reported previously. Moreover, this methodology enables flexible exploration of new substitution patterns around the privileged β-lactam core for drug design and optimization.

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