scholarly journals H-bonded Chains and Networks: A Recurring Feature in the Solid State Structures of Manganese (III) Carboxylate Schiff Base Complexes

2013 ◽  
Vol 12 (2) ◽  
pp. 8-20
Author(s):  
Biny Sasi ◽  
Swathy S ◽  
Thampidas V S ◽  
Pike D Robert
Keyword(s):  
Schiff Base ◽  
Solid State ◽  
Single Crystal ◽  
Schiff Base Complexes ◽  
X Ray Diffraction ◽  
X Ray ◽  
Distorted Octahedral ◽  
Jahn Teller ◽  
Solid State Structures

Two new manganese(III) Schiff base complexes,  [Mn(salen)(m-NO2-C6H4CO2)(H2O)] (1) and  [Mn(msalen) (p-OH-C6H4CO2)(H2O)] (2), where H2salen = N,N'-bis(salicylidene)-1,2-diaminoethane, H2msalen = N,N'-bis (3-methoxysalicylidene)-1,2-diaminoethane were synthesized from the manganese (II) carboxylates.  Single crystal X-ray diffraction studies show that the Jahn-Teller distorted octahedral complexes are stabilized by              H-bonded chains and networks in the solid state.  

scholarly journals Tetranuclear Cu(ii)-chiral complexes: synthesis, characterization and biological activity

RSC Advances ◽  
2019 ◽  
Vol 9 (42) ◽  
pp. 24087-24091 ◽  
Author(s):  
Krisana Peewasan ◽  
Marcel P. Merkel ◽  
Kristof Zarschler ◽  
Holger Stephan ◽  
Christopher E. Anson ◽  
...  
Keyword(s):  
Biological Activity ◽  
Schiff Base ◽  
Single Crystal ◽  
Cd Spectroscopy ◽  
Schiff Base Complexes ◽  
X Ray Diffraction ◽  
Chiral Complexes ◽  
Enantiomerically Pure ◽  
X Ray

A pair of tetranuclear chiral Cu(ii)-Schiff-base complexes were synthesized using enantiomerically pure (S)-H2L and (R)-H2L ligands. These were characterised using single-crystal X-ray diffraction and CD spectroscopy and their biological activity tested.

Synthesis, characterization, and application of palladium complexes containing 8-quinolylphosphinite ligands

2010 ◽  
Vol 88 (2) ◽  
pp. 99-103 ◽  
Author(s):  
Earl Cook ◽  
Jason D. Masuda ◽  
Aibing Xia
Keyword(s):  
Solid State ◽  
Single Crystal ◽  
Phenylboronic Acid ◽  
Suzuki Coupling ◽  
Palladium Complexes ◽  
Aryl Halides ◽  
Coupling Reactions ◽  
X Ray Diffraction ◽  
X Ray ◽  
Solid State Structures

Palladium complexes containing 8-quinolylphosphinite ligands have been synthesized and characterized. Their solid state structures were determined by single-crystal X-ray diffraction. They were found to be active catalysts for Suzuki coupling reactions of phenylboronic acid and various aryl halides.

scholarly journals Synthesis, Solid-state Structures, Solution Behaviour and Catalysis Studies of Nickel Complexes of Bis(benzimidazolin-2-ylidene)pyridine Pincer Ligands

2012 ◽  
Vol 65 (7) ◽  
pp. 823 ◽  
Author(s):  
Karen D. M. MaGee ◽  
Guy Travers ◽  
Brian W. Skelton ◽  
Massimilliano Massi ◽  
Alan D. Payne ◽  
...  
Keyword(s):  
Solid State ◽  
Single Crystal ◽  
Nickel Complexes ◽  
Pincer Ligands ◽  
X Ray Diffraction ◽  
Nmr Studies ◽  
X Ray ◽  
Solution Studies ◽  
Solid State Structures ◽  
Solution Behaviour

N-Heterocyclic carbene–nickel complexes with five- and four-coordinate geometries [(CNC)NiBr2] and [(CNC)NiBr]X (X = PF6 or BPh4) have been prepared with the pincer ligands 2,6-bis(N-octylbenzimidazolin-2-ylidene)pyridine and 2,6-bis(N-butyl-5,6-dimethoxybenzimidazolin-2-ylidene)pyridine. The addition of the n-octyl substituent significantly extends the solubility of the complexes and has allowed UV-vis solution studies of the complexes in dichloromethane and methanol. The four- and five-coordinate species exist in equilibrium in solution and this equilibrium has been explored by UV-vis studies. The complexes have also been characterized by NMR studies, and single crystal X-ray diffraction studies have been performed on [(CNC)NiBr2] (where CNC = 2,6-bis(N-octylbenzimidazolin-2-ylidene)pyridine) and [(CNC)NiBr]BPh4 (where CNC = 2,6-bis(N-butyl-5,6-dimethoxybenzimidazolin-2-ylidene)pyridine).

meso–meso Directly-linked trimeric and pentameric electron-deficient porphyrin–hexaphyrin hybrid arrays

2016 ◽  
Vol 20 (01n04) ◽  
pp. 245-253 ◽  
Author(s):  
Hirotaka Mori ◽  
Atsuhiro Osuka
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
Single Crystal ◽  
Diffraction Analysis ◽  
X Ray Diffraction ◽  
X Ray ◽  
Solid State Structures

meso–meso Directly-linked trimeric and pentameric porphyrin–hexaphyrin hybrid arrays 5 and 6 comprising of electron-deficient porphyrin units were prepared by cross-condensation of monomeric and dimeric electron-deficient meso-formyl porphyrins with a tripyrrane. The solid-state structures of 5 and 6 have been determined by single crystal X-ray diffraction analysis. The latter is the largest crystal structure of meso–meso linked multiporphyrinic array analogues reported to date.

scholarly journals Synthesis, crystal structures and spectroscopic investigation of new Cu/Schiff-base complexes

2014 ◽  
Vol 10 (8) ◽  
pp. 3068-3079
Author(s):  
Ahmed Toumi ◽  
Mohamed Rzaigui ◽  
Hichem Ben Jannet
Keyword(s):  
Schiff Base ◽  
Solid State ◽  
Copper Complexes ◽  
Spectroscopic Properties ◽  
Schiff Base Complexes ◽  
X Ray Diffraction ◽  
Neutral Complex ◽  
Schiff Base Ligands ◽  
1H And 13C Nmr ◽  
Solid State Structures

Three novel Copper complexes, [Cu(L1)2][CuCl2] (1),  [Cu(L2)Cl] (2) and [Cu2(L3)3Cl2] (3), have been prepared by reaction of CuCl with the Schiff-base ligands L1: N,N’-bis(thiophen-2-ylmethylene)-ethane-1,2-diamine, L2: N,N’-bis(1H-pyrrol-2-ylmethylene)ethane-1,2-diamine and L3: N,N’-bis(2-nitrobenzylidene)-ethane-1,2-diamine in acetonitrile. The solid-state structures of these complexes were determined by X-ray diffraction from single crystal data and characterized by 1H and 13C NMR, IR and UV/Vis spectroscopies. This study shows that (1) is an ionic complex with a Cu(I)-centered cation and an isolated linear dichlorocuprate(I) anion, (3) is a dinuclear neutral complex of Cu(I) while (2)  is a mononuclear neutral complex of Cu(II). In the three complexes, Cu is tetracordinated in different geometrical environments. The atomic arrangements and spectroscopic properties of the three complexes are reported. Complexes 1-3 exhibit, in the solid state at room temperature, photoluminescence between 320 and 550 nm.

Lewis-Base Adducts of Group 11 Metal(I) Compounds .XLV. Conformational Systematics of [(N-base)1(AgX)1]N Complexes

1989 ◽  
Vol 42 (1) ◽  
pp. 149 ◽  
Author(s):  
LM Engelhardt ◽  
S Gotsis ◽  
PC Healy ◽  
JD Kildea ◽  
BW Skelton ◽  
...  
Keyword(s):  
Solid State ◽  
Single Crystal ◽  
Metal Atom ◽  
Lewis Base ◽  
The Novel ◽  
X Ray Diffraction ◽  
Nitrogen Base ◽  
X Ray ◽  
Structural Types ◽  
Solid State Structures

A number of 1 : 1 silver(1) halide/nitrogen base adducts, [ LAgX ], have been synthesized by recrystallization of the parent silver(I) halide from the neat base, and their solid state structures determined by single-crystal X-ray diffraction and rationalized in terms of the hierarchy of structural types described in the preceding papers based on steric profile of the base. In consequence of increased metal atom size (cf. Cu), a more limited array of structural types is observed.[(pyridine) AgBr,I ] ∞, [(2,4,6-trimethylpyridine) AgCI,Br,I ] ∞ and [( quinaldine ) AgCI,Br ] are 'stair' polymers; [( piperidine ) AgBr,I ]4 and [(2,2,6,6-tetramethyIpiperidine) AgI ]4 are 'cube' tetramers, while [( diethylamine ) AgCI,Br,I ] provide the first complete metal halide series of the novel 'tube' polymer.

scholarly journals Synthesis of Bis(benzotriazol-1-yl)methane Derivatives by Cobalt-Catalyzed Formation of C-C Bonds

Proceedings ◽  
2019 ◽  
Vol 41 (1) ◽  
pp. 29 ◽  
Author(s):  
Valentina Ferraro ◽  
Marco Bortoluzzi ◽  
Jesús Castro
Keyword(s):  
Solid State ◽  
Single Crystal ◽  
X Ray Diffraction ◽  
X Ray ◽  
Solid State Structures

The compounds bis(benzotriazol-1-yl)phenylmethane and bis(benzotriazol-1-yl)pyridin-2-ylmethane were prepared by reacting (benzotriazol-1-yl)methanone and benzaldehyde or pyridine-2-carboxaldehyde using CoCl2 as catalyst under neat conditions. The products were characterized spectroscopically and the solid-state structures were ascertained by single-crystal X-ray diffraction.

Synthesis, Characterization and Luminescence of Silver(I) and Gold(I) Complexes Bearing a Diethyl Acetal Functionalized N-Heterocyclic Carbene

2011 ◽  
Vol 66 (12) ◽  
pp. 1255-1260 ◽  
Author(s):  
Sebastian Leitner ◽  
Manuela List ◽  
Uwe Monkowius
Keyword(s):  
Solid State ◽  
Single Crystal ◽  
Silver Bromide ◽  
Diethyl Acetal ◽  
X Ray Diffraction ◽  
X Ray ◽  
Metal Interactions ◽  
Metal Metal ◽  
Solid State Structures ◽  
Bromide Complex

1-(2,2ʹ-Diethoxyethyl)-3-methyl-imidazolium bromide, 1, has been prepared and used as a precursor for the synthesis of the corresponding silver bromide complex [(NHC)2Ag][AgBr2], 2. Transmetallation of 2 with (tht)AuBr (tht = tetrahydrothiophene) yields (NHC)AuBr, 3. The solid-state structures of 2 and 3 have been determined by single-crystal X-ray diffraction revealing a loose aggregation of the complexes by weak metal-metal interactions. Due to the presence of these contacts, both complexes are emissive in the solid state.

Steric influence of salicylaldehyde-based Schiff base ligands on the formation of trans-[Re(PR3)2(Schiff base)]+ complexes

2019 ◽  
Vol 48 (34) ◽  
pp. 12943-12955
Author(s):  
Jakob E. Baumeister ◽  
Andrew W. Mitchell ◽  
Steven P. Kelley ◽  
Charles L. Barnes ◽  
Silvia S. Jurisson
Keyword(s):  
Schiff Base ◽  
Single Crystal ◽  
Schiff Base Complexes ◽  
Steric Effects ◽  
X Ray Diffraction ◽  
Schiff Base Ligands ◽  
X Ray ◽  
Steric Influence

The steric effects of backbone groups on the synthesis and stability of trans-[Re(PR3)2(Schiff base)]+ compounds were assessed using NMR, HPLC, electrochemistry and single crystal X-ray diffraction.

Synthesis and Structures of (η3-Methallyl)palladium(II) Complexes with Phosphanylferrocenecarboxylic Ligands

2006 ◽  
Vol 71 (3) ◽  
pp. 279-293 ◽  
Author(s):  
Petr Štěpnička ◽  
Ivana Císařová
Keyword(s):  
Acetic Acid ◽  
Solid State ◽  
Carboxylic Acid ◽  
Single Crystal ◽  
Spectral Methods ◽  
Chelate Complex ◽  
X Ray Diffraction ◽  
X Ray ◽  
Solid State Structures

Di-μ-chlorobis{(η3-methallyl)palladium(II)} (1) reacts with two equivalents of 1'-(diphenylphosphanyl)ferrocene-1-carboxylic acid (Hdpf) and rac-[2-(diphenylphosphanyl)ferrocen-1-yl]acetic acid (rac-Hpfa) to give complexes with P-monodentate phosphanylcarboxylic ligands: [PdCl(η3-CH2C(Me)CH2)(L-κP)], L = Hdpf (2) and rac-Hpfa (4). Similar reactions with the corresponding carboxylate salts (Kdpf and Kpfa) afford, respectively, an ill-defined polymer formulated tentatively [{Pd(η3-CH2C(Me)CH2)(dpf)}n] (3) and the molecular chelate complex [Pd(η3-CH2C(Me)CH2)(pfa-κ2O,P)] (5), which crystallizes as a monohydrate. All compounds were studied by spectral methods (IR and NMR) and the solid-state structures of 2, 4, and 5·H2O were determined by single-crystal X-ray diffraction.

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