Pyridazine-bridged expanded rosarin and semi-rosarinogen

2021 ◽  
Author(s):  
Kui Xu ◽  
Xiaoshuai Zhang ◽  
Guopeng Liu ◽  
Wanzun Ma ◽  
Yu Yin ◽  
...  
Keyword(s):  
Single Crystal ◽  
Diffraction Analysis ◽  
Theoretical Calculations ◽  
X Ray Diffraction ◽  
X Ray

The synthesis of the pyridazine-bridged expanded rosarin 1 and a reduced precursor, semi-rosarinogen 2, is reported. A single crystal X-ray diffraction analysis of 1 and theoretical calculations show that both...

scholarly journals Direct borylation of terrylene and quaterrylene

2020 ◽  
Vol 16 ◽  
pp. 621-627
Author(s):  
Haruka Kano ◽  
Keiji Uehara ◽  
Kyohei Matsuo ◽  
Hironobu Hayashi ◽  
Hiroko Yamada ◽  
...  
Keyword(s):  
Single Crystal ◽  
Diffraction Analysis ◽  
Organic Solvents ◽  
Column Chromatography ◽  
Theoretical Calculations ◽  
Photophysical Properties ◽  
X Ray Diffraction ◽  
X Ray ◽  
Homo And Lumo ◽  
Post Modification

The preparation of large rylenes often needs the use of solubilizing groups along the rylene backbone, and all the substituents of the terrylenes and quaterrylenes were introduced before creating the rylene skeleton. In this work, we successfully synthesized 2,5,10,13-tetrakis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)terrylene (TB4) by using an iridium-catalyzed direct borylation of C–H bonds in terrylene in 56% yield. The product is soluble in common organic solvents and could be purified without column chromatography. Single crystal X-ray diffraction analysis revealed that the terrylene core is not disturbed by the substituents and is perfectly flat. The photophysical properties of TB4 are also unchanged by the substituents because the carbon atoms at 2,5,10,13-positions have less coefficients on its HOMO and LUMO, estimated by theoretical calculations. Finally, the same borylation reaction was applied for quaterrylene, resulting in the formation of soluble tetra-borylated quaterrylene despite a low yield. The post modification of rylenes enables us to prepare their borylated products as versatile units after creating the rylene skeletons.

Synthesis of 4-(3-coumarinyl)-3-benzyl-4-thiazolin-2-one 4-methylbenzylidenehydrazone and determination of the isomeric structure by X-ray analysis

2003 ◽  
Vol 218 (12) ◽  
Author(s):  
Süheyla Özbey ◽  
Nilgün Karalı ◽  
Aysel Gürsoy
Keyword(s):  
Single Crystal ◽  
Diffraction Analysis ◽  
Spectral Data ◽  
X Ray Diffraction ◽  
X Ray ◽  
Isomeric Structure ◽  
Elemental Analyses

AbstractIn this study 4-(3-coumarinyl)-3-benzyl-4-thi azolin-2-one 4-methylbenzylidenehydrazone 3 was synthesised. An independent proof of the thiazolylhydrazone structure of 3 was achieved by single crystal X-ray diffraction analysis. Elemental analyses and spectral data (IR,

Single-crystal X-ray diffraction analysis of nonplanar autoepitaxial silicon layers

2009 ◽  
Vol 45 (14) ◽  
pp. 1610-1613
Author(s):  
V. T. Bublik ◽  
L. V. Kozhitov ◽  
T. T. Kondratenko
Keyword(s):  
Single Crystal ◽  
Diffraction Analysis ◽  
X Ray Diffraction ◽  
X Ray

Functionalized triphenylphosphine oxide-based manganese(II) complexes for luminescent printing

2021 ◽  
Author(s):  
Xiaomeng Huang ◽  
Yanyan Qin ◽  
Pengfei She ◽  
Haixing Meng ◽  
Shu-Juan Liu ◽  
...  
Keyword(s):  
Single Crystal ◽  
Diffraction Analysis ◽  
Triphenylphosphine Oxide ◽  
X Ray Diffraction ◽  
X Ray

Three novel neutral manganese(II) complexes (TPhPONMe2)2MnBr2, (TPhPOOMe)2MnBr2, and (TPhPOCF3)2MnBr2 have been designed and synthesized based on functionalized Ph3PO ligand. These structures are clarified by single crystal X-ray diffraction analysis, which...

scholarly journals Bridgehead vicinal diallylation of norbornene derivatives and extension to propellane derivatives via ring-closing metathesis

2016 ◽  
Vol 12 ◽  
pp. 1877-1883 ◽  
Author(s):  
Sambasivarao Kotha ◽  
Rama Gunta
Keyword(s):  
Single Crystal ◽  
Diffraction Analysis ◽  
X Ray Diffraction ◽  
Ring Closing Metathesis ◽  
X Ray ◽  
Synthetic Strategy ◽  
Norbornene Derivatives

Here, we report a simple synthetic strategy to the bridgehead vicinal diallylation of norbornene derivatives. These substrates are useful to generate propellanes via ring-closing metathesis. Single-crystal X-ray diffraction analysis of four compounds led to the realization of configurational correction of earlier reported molecules.

X-ray diffraction analysis of Ti-diffused single-crystal LiNbO3

1993 ◽  
Vol 191 (1) ◽  
pp. 15-19
Author(s):  
Perry Skeath ◽  
S.B. Qadri ◽  
F.A. Stevie
Keyword(s):  
Single Crystal ◽  
Diffraction Analysis ◽  
X Ray Diffraction ◽  
X Ray
Sign in / Sign up

Export Citation Format

Share Document