Intermolecular interactions and electronic properties in phosphino-(oligothiophene) palladium(II) and platinum(II) complexes

2007 ◽  
Vol 85 (5) ◽  
pp. 383-391 ◽  
Author(s):  
Tracey L Stott ◽  
Michael O Wolf ◽  
Brian O Patrick
Keyword(s):  
Solid State ◽  
Metal Complexes ◽  
Electronic Properties ◽  
Crystal Structures ◽  
Structural Properties ◽  
Absorption Spectra ◽  
Intermolecular Interactions ◽  
Electronic Spectra ◽  
X Ray ◽  
Π Stacking

A series of Pt(II) and Pd(II) complexes containing diphenylphosphino-substituted oligothiophene ligands ranging from 1 to 3 thiophene rings in length have been prepared. Crystal structures of four of these complexes were determined via single X-ray crystal diffraction and the solid-state packing arrangements found to vary with both the metal and the thiophene-containing ligand. In some cases, π-stacking between thiophene rings are found for the oligothiophene ligands. Solution and solid-state absorption spectra of these complexes are reported.Key words: oligothiophenes, metal complexes, structural properties, electronic spectra.

Crystal structures and electronic properties in 3d transition metal doped SrRuO3

2019 ◽  
Vol 48 (14) ◽  
pp. 4730-4741 ◽  
Author(s):  
Ilyas Qasim ◽  
Peter E. R. Blanchard ◽  
Kevin S. Knight ◽  
Jimmy Ting ◽  
Brendan J. Kennedy
Keyword(s):  
Solid State ◽  
High Resolution ◽  
Transition Metal ◽  
Neutron Diffraction ◽  
Electronic Properties ◽  
Crystal Structures ◽  
Powder Diffraction ◽  
X Ray ◽  
Metal Doped

The synthesis of polycrystalline samples of B-site doped SrRu1−xMxO3 with x ≤ 0.2 by solid state methods is described for a number of dopants (M = Mg, Mn, Fe, Co, Ni, Cu, or Zn) and the structures of these established using Synchrotron X-ray powder diffraction, and for SrRu0.8Cu0.2O3 high resolution neutron diffraction.

Functionalized Tetrathiafulvalene Derivatives and their Radical Cation Salts: Synthesis and X-Ray Crystal Structures

1997 ◽  
Vol 488 ◽  
Author(s):  
Martin R. Bryce ◽  
Adrian J. Moore ◽  
Andrei S. Batsanov ◽  
Antony Chesney ◽  
Clare L. Wood ◽  
...  
Keyword(s):  
Solid State ◽  
Crystal Structures ◽  
Intermolecular Interactions ◽  
Radical Cation ◽  
X Ray ◽  
Radical Cation Salts ◽  
Radical Ion Salts ◽  
New Donors

AbstractWe report our investigations into tetrathiafulvalene (TTF) derivatives bearing N-methylthiocarbamoyl and halogen substituents which engage in intermolecular interactions in the solid state. The synthesis of new donors is presented, along with the X-ray crystal structures of some of these derivatives and their radical ion salts.

Studies on Aromatic Trichromophore Systems Incorporating Anthracene Moieties. II. Crystal Structures of 2-(9-Anthryl)-1-(9-anthrylmethyl)ethyl 2-(9-Phenanthryl)-ethyl Succinate (A2PHEN) and 2-(9-Anthryl)-1-(9-anthrylmethyl)ethyl Methyl Succinate (A2SC) and Their Fluorescence in the Solid State

1994 ◽  
Vol 47 (3) ◽  
pp. 423 ◽  
Author(s):  
M Cotrait ◽  
P Marsau ◽  
L Kessab ◽  
S Grelier ◽  
A Nourmamode ◽  
...  
Keyword(s):  
Solid State ◽  
Crystal Structures ◽  
Intermolecular Interactions ◽  
Intramolecular Interactions ◽  
Van Der Waals Interactions ◽  
X Ray Diffraction ◽  
X Ray ◽  
Ethyl Methyl ◽  
Molecular Fluorescence ◽  
Ester Chain

The structures of 2-(9-anthryl)-1-(9-anthrylmethyl)ethyl 2-(9-phenanthryl)ethyl succinate (A2PHEN) and 2-(9-anthryl)-1-(9-anthrylmethyl)ethyl methyl succinate (A2SC) have been determined by X-ray diffraction, and the molecular fluorescence of the crystals has been established. The two crystals are monoclinic. A2PHEN: C 2/c, a 39.47(1), b 9.718(2), c 19.924(8) Ǻ; β 97.81(3)°; R 0.036 for 2903 unique reflections. A2SC: P 21/c, a 16.248(2), b 10.325(2), c 18.052(2) Ǻ. β 114.20(3)°; R 0.044 for 2586 unique reflections. For both structures, the bisanthracene moiety and a large part of the ester chain show similar conformations. The crystal cohesion is due to intermolecular π overlapping between one of the anthracene components of the bichromophore moiety and to numerous van der Waals interactions. No intramolecular interactions between the phenanthrene and the anthracene moieties are observed in A2PHEN. The fluorescence emissions of A2PHEN and A2SC are of excimer type, and correlate well with the intermolecular interactions between the anthracene rings.

scholarly journals Functionalised Terpyridines and Their Metal Complexes—Solid-State Interactions

Chemistry ◽  
2021 ◽  
Vol 3 (1) ◽  
pp. 199-227
Author(s):  
Young Hoon Lee ◽  
Jee Young Kim ◽  
Sotaro Kusumoto ◽  
Hitomi Ohmagari ◽  
Miki Hasegawa ◽  
...  
Keyword(s):  
Solid State ◽  
Metal Complexes ◽  
Crystal Structures ◽  
Weak Interactions ◽  
Dispersion Interactions ◽  
Derivatives Of

Analysis of the weak interactions within the crystal structures of 33 complexes of various 4′-aromatic derivatives of 2,2′:6′,2″-terpyridine (tpy) shows that interactions that exceed dispersion are dominated, as expected, by cation⋯anion contacts but are associated with both ligand–ligand and ligand–solvent contacts, sometimes multicentred, in generally complicated arrays, probably largely determined by dispersion interactions between stacked aromatic units. With V(V) as the coordinating cation, there is evidence that the polarisation of the ligand results in an interaction exceeding dispersion at a carbon bound to nitrogen with oxygen or fluorine, an interaction unseen in the structures of M(II) (M = Fe, Co, Ni, Cu, Zn, Ru and Cd) complexes, except when 1,2,3-trimethoxyphenyl substituents are present in the 4′-tpy.

X-ray Crystal Structure of Gallium Tris- (8-hydroxyquinoline):  Intermolecular π−π Stacking Interactions in the Solid State

1999 ◽  
Vol 11 (3) ◽  
pp. 530-532 ◽  
Author(s):  
Yue Wang ◽  
Weixing Zhang ◽  
Yanqin Li ◽  
Ling Ye ◽  
Guangdi Yang
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
Stacking Interactions ◽  
X Ray ◽  
Π Stacking

scholarly journals π-Stacking Stopper-Macrocycle Stabilized Dynamically Interlocked [2]Rotaxanes

Molecules ◽  
2021 ◽  
Vol 26 (15) ◽  
pp. 4704
Author(s):  
Sing-Ming Chan ◽  
Fung-Kit Tang ◽  
Ching-Yau Lam ◽  
Chak-Shing Kwan ◽  
Sam C. K. Hau ◽  
...  
Keyword(s):  
Crystal Structures ◽  
Thermodynamic Stability ◽  
Combinatorial Library ◽  
Aromatic Rings ◽  
Interlocked Molecules ◽  
X Ray ◽  
Π Stacking ◽  
Dynamic Combinatorial Library

The synthesis of mechanically interlocked molecules is valuable due to their unique topologies. With π-stacking intercomponent interaction, e.g., phenanthroline and anthracene, novel [2]rotaxanes have been synthesized by dynamic imine clipping reaction. Their X-ray crystal structures indicate the π-stackings between the anthracene moiety (stopper) on the thread and the (hetero)aromatic rings at the macrocycle of the rotaxanes. Moreover, the length of glycol chains affects the extra π-stacking intercomponent interactions between the phenyl groups and the dimethoxy phenyl groups on the thread. Dynamic combinatorial library has shown at best 84% distribution of anthracene-threaded phenanthroline-based rotaxane, coinciding with the crystallography in that the additional π-stacking intercomponent interactions could increase the thermodynamic stability and selectivity of the rotaxanes.

Bis(1-phenyl-1-propyne) complexes of tungsten(II): crystal structures of [WI2(CO)(NCR)(η2-MeC2Ph)2] (R = Me, Et, or Ph)

2001 ◽  
Vol 79 (3) ◽  
pp. 263-271
Author(s):  
Paul K Baker ◽  
Michael GB Drew ◽  
Deborah S Evans
Keyword(s):  
Carbon Monoxide ◽  
Solid State ◽  
Crystal Structures ◽  
Octahedral Geometry ◽  
X Ray ◽  
X Ray Crystallography ◽  
Alkyne Complexes ◽  
First Time

Reaction of [WI2(CO)3(NCMe)2] with two equivalents of 1-phenyl-1-propyne (MeC2Ph) in CH2Cl2, and in the absence of light, gave the bis(1-phenyl-1-propyne) complex [WI2(CO)(NCMe)(η2-MeC2Ph)2] (1) in 77% yield. Treatment of equimolar quantities of 1 and NCR (R = Et, i-Pr, t-Bu, Ph) in CH2Cl2 afforded the nitrile-exchanged products, [WI2(CO)(NCR)(η2-MeC2Ph)2] (2-5) (R = Et (2), i-Pr (3), t-Bu (4), Ph (5)). Complexes 1, 2, and 5 were structurally characterized by X-ray crystallography. All three structures have the same pseudo-octahedral geometry, with the equatorial sites being occupied by cis and parallel alkyne groups, which are trans to the cis-iodo groups. The trans carbon monoxide and acetonitrile ligands occupy the axial sites. In structures 1 and 2, the methyl and phenyl substituents of the 1-phenyl-1-propyne ligands are cis to each other, whereas for the bulkier NCPh complex (5), the methyl and phenyl groups are trans to one another. This is the first time that this arrangement has been observed in the solid state in bis(alkyne) complexes of this type.Key words: bis(1-phenyl-1-propyne), carbonyl, nitrile, diiodo, tungsten(II), crystal structures.

Second and third row transition metal complexes of 1,1′-bi-2-naphthol and the X-ray crystal structures of (Bu4nN)[MoO2(acac)(BINO)] (1) and (Bu4nN)2(H2BINO)2[Mo2O7] (2)

Polyhedron ◽  
1997 ◽  
Vol 16 (8) ◽  
pp. 1323-1329 ◽  
Author(s):  
William P. Griffith ◽  
Helena I.S. Nogueira ◽  
Andrew J.P. White ◽  
David J. Williams
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Crystal Structures ◽  
Transition Metal Complexes ◽  
X Ray
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