Heterogeneous catalysis over a barium carboxylate framework compound: Synthesis, X-ray crystal structure and aldol condensation reaction

Polyhedron ◽  
2012 ◽  
Vol 43 (1) ◽  
pp. 63-70 ◽  
Author(s):  
Debraj Saha ◽  
Tanmoy Maity ◽  
Rupam Sen ◽  
Subratanath Koner
Keyword(s):  
Crystal Structure ◽  
Heterogeneous Catalysis ◽  
Aldol Condensation ◽  
Condensation Reaction ◽  
X Ray ◽  
Compound Synthesis

Notizen: Eine neue bicyclische Zinn-Selen-Verbindung. Synthese und Kristallstruktur von [{Cp(CO)2Fe}3ClSn3Se4] / A New Bicyclic Tin Selenium Compound. Synthesis and Crystal Structure of [{Cp(CO)2Fe}3ClSn3Se4]

1993 ◽  
Vol 48 (7) ◽  
pp. 1009-1012 ◽  
Author(s):  
Kurt Merzweiler ◽  
Harald Kraus
Keyword(s):  
Crystal Structure ◽  
Structure Determination ◽  
Unit Cell ◽  
Monoclinic Space Group ◽  
Synthesis And Crystal Structure ◽  
Selenium Compound ◽  
Space Group ◽  
X Ray ◽  
Lattice Constants ◽  
Compound Synthesis

[{Cp(CO)2Fe}SnCl3] reacts with Na2Se in THF to form the compound [{Cp(CO)2Fe}3ClSn3Se4] 1. 1 crystallizes in the monoclinic space group P21/n with 4 formula units per unit cell. The lattice constants are α = 1435.2(7), b = 1124.4(4), c = 1972.7(12) pm, β = 94.59(4)°. According to the X-ray structure determination 1 contains a bicyclic Sn3Se4 framework.

A 1-Methyl-Phosphininium Compound: Synthesis, X-Ray Crystal Structure, and DFT Calculations

2003 ◽  
Vol 42 (40) ◽  
pp. 4940-4944 ◽  
Author(s):  
Audrey Moores ◽  
Louis Ricard ◽  
Pascal Le Floch
Keyword(s):  
Crystal Structure ◽  
Dft Calculations ◽  
X Ray ◽  
Compound Synthesis

Syntheses of Pyrazolo-, Isoxazolo-, Pyrido- and Pyrimido-Carbazoles from 2-(3′,4′-Dimethoxybenzylidene)-2,3,4,9-Tetrahydrocarbazol-1-Ones

2008 ◽  
Vol 2008 (10) ◽  
pp. 572-577 ◽  
Author(s):  
Makuteswaran Sridharan ◽  
Lucas K. Beagle ◽  
Matthias Zeller ◽  
Karnam Jayarampillai Rajendra Prasad
Keyword(s):  
Crystal Structure ◽  
Single Crystal ◽  
Hydrazine Hydrate ◽  
Aldol Condensation ◽  
Hydroxylamine Hydrochloride ◽  
Molecular And Crystal Structure ◽  
X Ray Diffraction ◽  
X Ray ◽  
Guanidinium Nitrate

Mixed aldol condensation of 2,3,4,9-tetrahydrocarbazol-1-ones with 3,4-dimethoxybenzaldehyde (veratraldehyde) yielded 2-(3′,4′-dimethoxybenzylidene)-2,3,4,9-tetrahydrocarbazol-1-ones. These enones on reaction with hydrazine hydrate, hydroxylamine hydrochloride, malononitrile and guanidinium nitrate under different conditions yielded the corresponding pyrazolo[3,4-a]-, isoxazolo[3,4-a]-, pyrido[2,3-a]-, and pyrimido[4,5-a]-carbazoles respectively. The molecular and crystal structure of 2-(3′,4′-dimethoxybenzylidene)-2,3,4,9-tetrahydro-1H-carbazol-1-one resolved by single crystal X-ray diffraction is discussed.

Heteronuclear Nucleobase Complexes as Tools for the Isolation of the Minor Rotamer of the Parent Compound: Synthesis and Crystal Structure Determination of Head-Head and Head-Tail Forms of trans-[(CH3NH2)2Pt(1-MeC-N3)2]2+ (1-MeC = 1-methylcytosine)

1995 ◽  
Vol 50 (11) ◽  
pp. 1767-1776 ◽  
Author(s):  
Dagmar Holthenrich ◽  
Imre Sóvágó ◽  
Gerd Fusch ◽  
Andrea Erxleben ◽  
Edda C. Fusch ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Parent Compound ◽  
Crystal Structure Analysis ◽  
Rapid Crystallization ◽  
Synthesis And Crystal Structure ◽  
X Ray ◽  
Compound Synthesis ◽  
The One ◽  
Solid State Structures

The two rotamers (head-tail, 1, and head-head, 2) of the bis(1-methylcytosine)complex of trans-(CH3NH2)2Pt(II), have been crystallized as ClO4- (1, 2a) and PF6- (2b) salts and characterized by X-ray crystal structure analysis and 1H and 195Pt NMR spectroscopy. In aqueous solution, 1 is preferred over 2 by 70:30. Upon slow crystallization from H2O, 1 is obtained as the only product. Isolation of 2a and 2b has now been accomplished via formation of the heteronuclear derivative trans-[(CH3NH2)2Pt(1-MeC--N3,N4)2Hg]2+, in which the deprotonated 1-methylcytosinato ligands (1-MeC-) are oriented head-head, precipitation of Hg(II) by thiourea, and rapid crystallization of the parent compound. The solid state structures of 1 and 2b differ markedly in a number of aspects. Isolation of pure 1 and 2 permits a detailed study of the kinetics and thermodynamics of the interconversion of the two rotamers. From comparison with the behavior of 1 and 2 in H2O on the one hand and DMSO and DMF on the other a clear solvent effect on the rotamer distribution is seen which most likely relates to differences in H bonding between solvent and solute.

A 1-Methyl-Phosphininium Compound: Synthesis, X-Ray Crystal Structure, and DFT Calculations

2003 ◽  
Vol 115 (40) ◽  
pp. 5090-5094 ◽  
Author(s):  
Audrey Moores ◽  
Louis Ricard ◽  
Pascal Le Floch
Keyword(s):  
Crystal Structure ◽  
Dft Calculations ◽  
X Ray ◽  
Compound Synthesis

A novel organometallic Re/Te compound. Synthesis and X-ray crystal structure of the complex [Re(CO)3(PEt3)2Te2Re(CO)3(PEt3)]2

1998 ◽  
Vol 1 (4) ◽  
pp. 150-151 ◽  
Author(s):  
Franco Cecconi ◽  
Carlo A. Ghilardi ◽  
Stefano Midollini ◽  
Annabella Orlandini
Keyword(s):  
Crystal Structure ◽  
X Ray ◽  
Compound Synthesis

A metalloporphyrin-carborane sandwich compound: synthesis and x-ray crystal structure of (OEP)Zr(.eta.5-1,2-C2B9H11)

1992 ◽  
Vol 114 (10) ◽  
pp. 3996-3997 ◽  
Author(s):  
John Arnold ◽  
Stephen E. Johnson ◽  
Carolyn B. Knobler ◽  
M. Frederick Hawthorne
Keyword(s):  
Crystal Structure ◽  
X Ray ◽  
Sandwich Compound ◽  
Compound Synthesis

Synthesis and Crystal Structure Hindered Amine with Methaerylate

2015 ◽  
Vol 1095 ◽  
pp. 381-384
Author(s):  
Wei Wei Xue ◽  
Xiu Qin Zhang ◽  
Qiang Chen ◽  
Ji Jin ◽  
Guo Yuan Lu
Keyword(s):  
Crystal Structure ◽  
Methacrylic Acid ◽  
Condensation Reaction ◽  
Crystallographic Analysis ◽  
Synthesis And Crystal Structure ◽  
X Ray

The high pure hindered amine with methaerylate (2,2,6,6-tetramethylpiperidin-4-yl methacrylate) 4 was synthesized by a condensation reaction of 2,2,6,6-tetramethylpiperidin-4-ol and methacrylic anhydride via isolation of the salt (1:1) of 4 and methacrylic acid in an improved yield (total 80%). The structure of the salt 4 of hindered amine was demonstrated by X-ray crystallographic analysis.

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