Triplet Diphenylcarbenes Protected by Trifluoromethyl and Bromine Groups. A Triplet Carbene Surviving a Day in Solution at Room Temperature

2006 ◽  
Vol 128 (3) ◽  
pp. 957-967 ◽  
Author(s):  
Tetsuji Itoh ◽  
Yoshimaru Nakata ◽  
Katsuyuki Hirai ◽  
Hideo Tomioka
Keyword(s):  
Room Temperature ◽  
Triplet Carbene

2,2',4,4',6,6'-Hexabromodiphenylcarbene. The First Stable Triplet Carbene in Fluid Solution at Low Temperature and in the Crystal State at Room Temperature

1995 ◽  
Vol 117 (23) ◽  
pp. 6376-6377 ◽  
Author(s):  
Hideo Tomioka ◽  
Tetsuya Watanabe ◽  
Katsuyuki Hirai ◽  
Katsuhiko Furukawa ◽  
Takeji Takui ◽  
...  
Keyword(s):  
Low Temperature ◽  
Room Temperature ◽  
Fluid Solution ◽  
Crystal State ◽  
Triplet Carbene

A Triplet Carbene Surviving a Week in Solution at Room Temperature

2003 ◽  
Vol 125 (48) ◽  
pp. 14664-14665 ◽  
Author(s):  
Eri Iwamoto ◽  
Katsuyuki Hirai ◽  
Hideo Tomioka
Keyword(s):  
Room Temperature ◽  
Triplet Carbene

Room-temperature stable ground-state triplet carbene with perpendicular conformation as models for organic high-spin units with robust π-spin polarization

1997 ◽  
Vol 85 (1-3) ◽  
pp. 1659-1660 ◽  
Author(s):  
K. Furukawa ◽  
T. Takui ◽  
K. Itoh ◽  
I. Miyahara ◽  
K. Hirotsu ◽  
...  
Keyword(s):  
Spin Polarization ◽  
High Spin ◽  
Ground State ◽  
Room Temperature ◽  
Triplet Carbene

Magnetic Properties of Microcrystalline Poly(Phenyl- Diacetylenes) Carrying Radical or Carbene Centers on the Side Chains

1989 ◽  
Vol 173 ◽  
Author(s):  
Noboru Koga ◽  
Katsuya Inoue ◽  
Noriko Sasagawa ◽  
Hiizu Iwamura
Keyword(s):  
Cryogenic Temperature ◽  
Room Temperature ◽  
X Ray ◽  
Spontaneous Polymerization ◽  
Weakly Coupled ◽  
Two Samples ◽  
Phenyl Rings ◽  
Insoluble Polymer ◽  
Polymeric Samples ◽  
Triplet Carbene

ABSTRACT1-Phenyl-l,3-butadiyne derivatives (3 and 4) carrying stable t-butylnitroxide and diazomethyl groups, respectively, have been prepared. Mixed crystals of 3 and the corresponding hydroxylamine 2 (x003c:1:1) polymerized in the solid state at 100°C to give black-violet microcrystals with a metallic luster. A microcrystalline sample of 4 underwent spontaneous polymerization at room temperature when crystallized to give an insoluble polymer which was then photolyzed at cryogenic temperature to generate triplet carbene centers attached to the phenyl rings of the poly(phenyldiacetylene). Some of these microcrystalline polymeric samples were responsive to a magnet at room temperature. Magnetic susceptibility measurements on the two samples revealed only weakly coupled independent spins Hydrogen bonding between the polydiacetylene chains as estimated by X-ray crystal structure of 2 is expected to be effective for increasing the dimension of the spin alignment.

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