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McCarthy analyzes a famous dream of August Kekulé's as a model of the unconscious mind and the origins of language. He theorizes about the nature of the unconscious mind and its separation from human language. The unconscious, according to McCarthy, "is a machine for operating an animal" and that "all animals have an unconscious."
Kekulé structure of benzene with alternating double bonds. Kekulé's most famous work was on the structure of benzene. [3] In 1865 Kekulé published a paper in French (for he was then still in Belgium) suggesting that the structure contained a six-membered ring of carbon atoms with alternating single and double bonds. [11]
Hückel's rule can also be applied to molecules containing other atoms such as nitrogen or oxygen. For example, pyridine (C 5 H 5 N) has a ring structure similar to benzene, except that one -CH- group is replaced by a nitrogen atom with no hydrogen. There are still six π electrons and the pyridine molecule is also aromatic and known for its ...
Clar's rule states that for a benzenoid polycyclic aromatic hydrocarbon (i.e. one with only hexagonal rings), the resonance structure with the largest number of disjoint aromatic π-sextets is the most important to characterize its chemical and physical properties. Such a resonance structure is called a Clar structure. In other words, a ...
Benzene is an organic chemical compound with the molecular formula C 6 H 6. The benzene molecule is composed of six carbon atoms joined in a planar hexagonal ring with one hydrogen atom attached to each. Because it contains only carbon and hydrogen atoms, benzene is classed as a hydrocarbon.
Structures of some fundamental cyclophanes: [n]-paracyclophanes (left), [n]-metacyclophanes, and [n.n]paracyclophanes (right). In organic chemistry , a cyclophane is a hydrocarbon consisting of an aromatic unit (typically a benzene ring) and a chain that forms a bridge between two non-adjacent positions of the aromatic ring.
The skeletal formula and substituent numbering scheme of the parent compound dibenzo-1,4-dioxin. The structure of dibenzo-1,4-dioxin consists of two benzene rings joined by two oxygen bridges. This makes the compound an aromatic diether. The name dioxin formally refers to the central dioxygenated ring, which is stabilized by the two flanking ...
Since the 19th century, the art of dream interpretation has been transferred to a scientific ground, making it a distinct part of psychology. [1] However, the dream symbols of the "unscientific" days—the outcome of hearsay interpretations that differ around the world among different cultures—continued to mark the day of an average person, who is most likely unfamiliar with Freudian ...