Antimony Diiminopyridine Complexes

2021 ◽  
Author(s):  
John R Tidwell ◽  
Jason Laurence Dutton ◽  
Caleb Daniel Martin
Keyword(s):  
Antimony Trichloride ◽  
Trimethylsilyl Trifluoromethanesulfonate ◽  
Methyl Phenyl

The stoichiometric reactions of antimony trichloride, trimethylsilyl trifluoromethanesulfonate, and diiminopyridine ligands lead to the formation of N,N′,N″-chelated SbCl2 cationic complexes. Methyl, phenyl substituents on the imine carbons of the ligand...

Degradation in a Methyl-phenyl Co-Polymeric Polysilane for LED Applications

2003 ◽  
Vol 769 ◽  
Author(s):  
Asha Sharma ◽  
Deepak ◽  
Monica Katiyar ◽  
Satyendra Kumar ◽  
V. Chandrasekhar ◽  
...  
Keyword(s):  
Thin Films ◽  
Molecular Weight ◽  
Light Source ◽  
Room Temperature ◽  
Light Exposure ◽  
Room Temperature Photoluminescence ◽  
Pl Spectrum ◽  
Pl Intensity ◽  
Methyl Phenyl

AbstractThe optical degradation of polysilane copolymer has been studied in spin cast thin films and solutions using light source of 325 nm wavelength. The room temperature photoluminescence (PL) spectrum of these films show a sharp emission at 368 nm when excited with a source of 325 nm. However, the PL intensity deteriorates with time upon light exposure. Further the causes of this degradation have been examined by characterizing the material for its transmission behaviour and changes occurring in molecular weight as analysed by GPC data.

Proton magnetic resonance study of the conformation of the pyrrolidine ring in some proline-thiohydantoins

1988 ◽  
Vol 53 (11) ◽  
pp. 2503-2510 ◽  
Author(s):  
Jef J. M. Sleeckx ◽  
Marc J. O. Anteunis ◽  
Frans A. M. Borremans
Keyword(s):  
Present Model ◽  
Coupling Constants ◽  
Proton Proton ◽  
Proton Coupling ◽  
Proton Magnetic Resonance Study ◽  
Vicinal Proton ◽  
Different Temperatures ◽  
Experimental Justification ◽  
State Assumption ◽  
Methyl Phenyl

The conformational behaviour of a series of N-substituted thiohydantoins of proline was studied by proton NMR. The pseudorotational parameters of the proline moiety were calculated from the ten vicinal proton-proton coupling constants assuming a two state equilibrium (N ⇋ S). The effect of the different substituents (methyl, phenyl, para-nitrophenyl) at the thiohydantoin nitrogen on the conformation of the pyrrolidine rings is discussed. The spectra of proline-N-methylthiohydantoin were recorded at different temperatures in octadeuterotoluene solution. The conformational analysis of these spectra showed that the ratio of the populations of the N and S forms changes considerably with temperature, while the conformational identity of both the N and S forms remains strictly preserved. These facts provide an additional experimental justification of the two-state assumption, at least so for the present model compounds.

Alkyl-substituted bis(4-((9H-fluoren-9-ylidene)methyl)phenyl)thiophenes: weakening of intermolecular interactions and additive-assisted crystallization

CrystEngComm ◽  
2021 ◽  
Vol 23 (14) ◽  
pp. 2654-2664
Author(s):  
Alina A. Sonina ◽  
Christina S. Becker ◽  
Anatoly D. Kuimov ◽  
Inna K. Shundrina ◽  
Vladislav Yu. Komarov ◽  
...  
Keyword(s):  
Intermolecular Interactions ◽  
Methyl Phenyl

Effect of alkyl substituents and an additive on crystallization and intermolecular interactions of bis(4-((9H-fluoren-9-ylidene)methyl)phenyl)thiophenes is revealed.

A New C-anionic Tripodal Ligand, 2-{Bis(benzothiazolyl)(methoxy)methyl}phenyl and its Bismuth Complexes

2021 ◽  
Author(s):  
Shigeru Shimada ◽  
Shuang-Feng Yin ◽  
Ming Bao
Keyword(s):  
Tripodal Ligand ◽  
Anionic Ligand ◽  
Methyl Phenyl

A new tripodal C-anionic ligand, 2-{bis(benzothiazolyl)(methoxy)methyl}phenyl (L), was stably generated by the reaction of the ligand precursor (L'), the corresponding bromide (2-BrC6H4)(MeO)C(C7H4NS)2 (C7H4NS = 2-benzothiazolyl), with nBuLi at –104 ºC...

The unexpected formation of a lithium-enolate from bis2-[(dimethylamino)methyl]phenyl copper lithium. X-ray structure of Li4[OC(CH2)C6H4CH2NMe2-2]4

1985 ◽  
Vol 292 (3) ◽  
pp. 319-324 ◽  
Author(s):  
Johann T.B.H. Jastrzebski ◽  
Gerard Van Koten ◽  
Martin J.N. Christophersen ◽  
Casper H. Stam
Keyword(s):  
Unexpected Formation ◽  
X Ray ◽  
Lithium Enolate ◽  
Methyl Phenyl
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