they might be even happier – orless unhappy, which is a crappy way to look at it psychologically but necessary if you wish to draw a diagram where a “happy couple” is
Such compounds are normally quite reactive, while benzene, in contrast, tends to be rather inert to all but the most powerful reagents. This apparent discrepancy disappeared after the resonance hybrid theory was developed; benzene is regarded as a hybrid of the two structures shown in the center...
In the case of the latter, the low energy barrier has been attributed to the chlorine substitution, in contrast to the 8.0 kJ mol−1 barrier observed in hexamethylbenzene53. As a point of reference, the rotational activation energy of a methyl group in organic molecules typically spans...
Here the hydrogen bonding acceptor is the electron cloud of a benzene ring. This type of interaction is important in maintaining the shape of proteins. Hydrogen fluoride (mp –92, bp 33°C) is another common substance that is strongly hydrogen-bonded in its condensed phases. The bifluoride ion...
Insertion of a chromium atom between the benzene rings of [2,2]paracyclophane has been accomplished by co-condensation of this ligand with chromium atoms at −196°C. Among other products, (1) is accompanied by bis(η6-[2.2]... Prof.,Dr.,Christoph,... - 《Angewandte Chemie Internatio...
MOF-200 was prepared using organic material 1,3,5-tris(4-carboxy[1,2-biphenyl]-4-yl)-benzene) (H3BBC) and metallic compound zinc nitrate. Further, graphene oxide was surface functionalized on MOF-200 which showed about 15% higher CO2 adsorption efficacy than the nonfunctionalized MOF [103]...
One new mononuclear manganese complex of [Mn(4,4′-bip) 2 (OH 2 ) 4 ](DBA)·4H 2 O (1) (4,4′-bipyridine, 4,4′-bip; H 2 DBA, benzene-1,3-dicarboxylic acid) has been obtained from the hydrothermal reaction of MnCl 2 ·4H 2 O, 4,4′-bipyridine and H 2 DBA in the ...
Choline Kinase Inhibitory Effect and Antiproliferative Activity of New 1,1′,1′′-(Benzene-1,3,5-triylmethylene)tris{4- [(disubstituted)amino]pyridinium} ... For see ChemInform in Full Text. Ana,Conejo-Garcia,Joaquin,... - 《Cheminform》 被引量: 40发表: 2003年 Choline kinase inhibitory ...
The tool of this diagram has a transmitter and two receivers and involves acoustic logging tools19. One receiver is 3 feet (CBL), and the other is 5 feet (VDL) from the transmitter (Fig.3). This tool must be placed in the middle of the well and cannot be pushed into the well in ...
Van der Waals (molecular) materials: Iodine, I2, carbon dioxide, CO2, naphthalene, C10H8, Group 18 (inert) gases, nitrogen, N2, benzene, C6H6, sulfur hexafluoride, SF6, carbon tetrachloride, CCl4, and hydrogen bonded solids [Network] Covalent materials : Diamond, C, silicon dioxide, SiO2,...