Synthesis and characterization of palladium complex trans-(Me3P)2Pd(C6H4C(H):NPr-iso)(NHPh). X-ray crystal structure analysis of [(Me3P)3Pd(C6H4C(H):NPr-iso)][BF4]

1991 ◽  
Vol 10 (8) ◽  
pp. 2969-2972 ◽  
Author(s):  
Lawrence A. Villanueva ◽  
Khalil. Abboud ◽  
James M. Boncella
2003 ◽  
Vol 58 (10) ◽  
pp. 1005-1008 ◽  
Author(s):  
Martin Niehues ◽  
Gerald Kehr ◽  
Roland Fröhlich ◽  
Gerhard Erker

The reaction of 1,3-diisopropylimidazolium chloride (3) with benzylpotassium in d5-bromobenzene generates the stable carbene 1,3-diisopropylimidazol-2-ylidene that is trapped by hafnium tetrachloride. A chloride anion is subsequently added to the Hf atom of the resulting intermediate to yield the salt [(1,3-diisopropylimidazol-2-ylidene)HfCl₅−][1,3-diisopropylimidazolium+] 6 that was characterized by an X-ray crystal structure analysis.


2011 ◽  
Vol 66 (6) ◽  
pp. 553-558 ◽  
Author(s):  
Mathias O. Senge ◽  
Monica Pintea ◽  
Aoife A. Ryan

We report the synthesis and characterization of a meso-meso directly linked bisporphyrin 6 bearing both alkyl and aryl residues. Its oxidative fusing results in the corresponding meso-meso β -β ,β -β - linked bisporphyrin. The first crystal structure analysis of a meso-meso directly linked porphyrin dimer (6) has shown the inequivalency of the two porphyrin units with regard to the macrocycle conformation. Quite distinct mixings of distortion modes were observed for the two aromatic macrocycles.


2016 ◽  
Vol 15 (2) ◽  
pp. 190-199 ◽  
Author(s):  
Jozef Miklovič ◽  
Dušan Valigura ◽  
Ingrid Svoboda ◽  
Ján Moncol ◽  
Milan Mazúr

Abstract The synthesis and characterization of nine new copper(II) complexes [Cu(2-Clnic)2L2] (where 2-Clnic is 2-chloronicotinate anion, L is imidazole – Im, benzimidazole – Bim, furo[3,2-c]pyridine – FP, 2-methylfuro[3,2-c]pyridine – MFP, or [1]benzofuro[3,2-c]pyridine – BFP), [Cu(2-Clnic)2(INA)] (where INA is isonicotinamide), [Cu(2-Clnic)2(4-py)]·H2O (where 4-py is 4-methylpyridine) and [Cu2(2-Clnic)4(IQ)2] (where IQ is isoquinoline) are reported. The characterizations were based on elemental analysis, infrared, electronic and EPR spectra. The dimeric character of [Cu2(2-Clnic)4(IQ)2] is assumed on the EPR spectrum and the other spectral methods. The crystal structure of the [Cu(2-Clnic)2(Bim)2] and [Cu(2-Clnic)2(FP)2] complexes have been determined by X-ray crystal structure analysis. Both complexes exhibit the hexacoordination coordination polyhedra around copper atom that lies in the crystallographic center of symmetry. The distorted tetragonal-bipyramidal (4+2) arrangement is in good agreement with spectral data that have suggested an asymmetric chelate coordination of the carboxylic group.


Inorganics ◽  
2018 ◽  
Vol 6 (4) ◽  
pp. 108 ◽  
Author(s):  
Markus Mann ◽  
Olaf Reckeweg ◽  
Richard Dronskowski

Crystals of LiCs2[N(CN)2]3 were obtained from the reaction of stoichiometric amounts of aqueous solutions of LiCl and CsBr with Ag[N(CN)2]. X-ray single-crystal structure analysis showed that LiCs2[N(CN)2]3 crystallizes isotypically to NaCs2[N(CN)2]3 and adopts the hexagonal space group P63/m (No. 176), with a = 6.8480(8), c = 14.1665(17) Å, and Z = 2. The IR and Raman spectra of the title compound exhibit modes typical for the dicyanamide anion.


Author(s):  
Hosapalya Thimmaiah Srinivasa ◽  
Palakshamurthy Bandrehalli Siddagangappa ◽  
Velmurugan Devadasan ◽  
Devarajegowda Hirihalli Chickegowda ◽  
Suresh HariPrasad

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