Results 41 to 50 of about 5,976 (269)
A Critical Assessment of the Performance of Magnetic and Electronic Indices of Aromaticity [PDF]
, 2010 The lack of reference aromatic systems in the realm of inorganic aromatic compounds makes the evaluation of aromaticity in all-metal and semimetal clusters a difficult task.
Feixas Geronès, Ferran +4 more
core +2 more sources
π‐Enlargement in Porphyrin Macrocycles at Interfaces
Angewandte Chemie, EarlyView.On‐surface synthesis of a 20‐π free‐base expanded porphyrin, by depositing onto a hot Ag(111) substrate an 18‐π free‐base precursor equipped with ‐CF3 functional groups ABSTRACT Porphyrins are essential heteroatomic macrocycles, fundamental to both biological systems and advanced technology.
Ana Barragán +11 more
wiley +2 more sources
Advanced Science, 2020 Although polycyclic conjugated hydrocarbons (PCHs) and their analogues have gained great progress in the fields of organic photoelectronic materials, the in‐depth study on present PCHs is still limited to hexacene or below because longer PCHs are ...
Wangqiao Chen +4 more
doaj +1 more source
Aromaticity of Heterocirculenes
Chemistry, 2021 This review summarizes the results on the aromaticity of a series of synthesized and hypothetical neutral heterocirculene molecules and their double charged ions.
Nataliya N. Karaush-Karmazin +2 more
doaj +1 more source
The applicability of three-dimensional aromaticity in BiSnn- Zintl analogues [PDF]
, 2010 Three-dimensional aromaticity is shown to play a role in the stability of deltahedral Zintl clusters and here we examine the connection between aromaticity and stability.
Castleman, A. W., Jr. +5 more
core +2 more sources
Dihydrogen Activation by Antiaromatic Pentaarylboroles [PDF]
Journal of the American Chemical Society, 2010 Facile metal-free splitting of molecular hydrogen (H(2)) is crucial for the utilization of H(2) without the need for toxic transition-metal-based catalysts. Frustrated Lewis pairs (FLPs) are a new class of hydrogen activators wherein interactions with both a Lewis acid and a Lewis base heterolytically disrupt the hydrogen-hydrogen bond.
Fan, Cheng +4 more
openaire +3 more sources
Angewandte Chemie, EarlyView.We disclose a novel boron macrocycle derived from the sustainable furan building block. The boraporphyrinoid exhibits a global antiaromatic ring current and dynamic conformational flexibility. Twofold reduction induces a switch to strong global aromaticity, accompanied by stiffening of the porphyrinoid backbone.
Lukas Swoboda +6 more
wiley +2 more sources
Do All‐Metal Antiaromatic Clusters Exist? [PDF]
ChemInform, 2003 AbstractFor Abstract see ChemInform Abstract in Full Text.
Chen, Zhongfang +4 more
openaire +3 more sources
Fused Aromatic and Antiaromatic Smaragdyrin Dimers [PDF]
Angewandte ChemieAbstractSingly‐linked aromatic [22]smaragdyrin BF2 complex dimer was synthesized by the reductive coupling of 16‐brominated [22]smaragdyrin BF2 complex, which was oxidized to a stable diradical with PbO2. As the first example of fused smaragdyrin dimer, a fused [22]smaragdyrin BF2 complex dimer was synthesized by the oxidation of a CuCl‐BF2 complex ...
Yang Liu +8 more
openalex +3 more sources
Shaping Antiaromatic π‐Systems by Metalation: Synthesis of a Bowl‐Shaped Antiaromatic Palladium Norcorrole [PDF]
Angewandte Chemie International Edition, 2017 AbstractThe synthesis of a bowl‐shaped antiaromatic molecule was achieved through the deformation of a planar antiaromatic porphyrinic π‐conjugation system by insertion of palladium into the small cavity of a metal‐free norcorrole. The bowl‐to‐bowl inversion dynamics of the antiaromatic Pd‐coordinated norcorrole was determined by variable‐temperature ...
Tsubasa Yonezawa +3 more
+8 more sources