Bermuda Triangle in Chemistry

Abstract

It is believed that the place called Bermuda triangle is able to hide of human seeing objects entered its area. A Bermuda triangle in chemistry is able to hide (mask) atoms or planar molecular fragments cut by their mirror plane of symmetry, not of human eyes but, of polarized light. A triangular skeleton (frame) has been imagined, possessing the ability to cover many hundreds of molecular formulae, providing the latter refer to aliphatic, or partially aliphatic, compounds, and with a low degree of oxidation. This skeleton (frame) is based on a very general and strong principle, valid in meso entities. The idea is advanced that isomers coming up from a molecular formula could be of four types (groups): meso, C2 symmetrical (CTS), irrechi (from irregular chiral) and constitutional (constit.). The following universal rule is revealed: all CTS and irrechi can be converted to meso ones, but the reverse is not true, at least for the same skeleton. At the same time, an impressive number of constitutional natural or synthetic combinations are characterized by at least one real or envisaged meso isomer. Thus, from a structural point of view, meso isomers are justified as reference compounds. The above mentioned principles have been applied to numerous natural compounds: amino acids, lipids, carbohydrates, nucleosides, vitamins, steroids, alkaloids, hydrocarbons. A mathematical equation sustaining the triangular representation has been proposed. One raises the question which of the four types is the upper. A tentative answer is given to this question.

Meso Chemical Symmetry, Definition by Molecular Modelling and Application to Inositols

“…Archaic (primitive) combinations have been defined as a distinct group devoid of chemical symmetry and of an imaginary partner possessing chemical symmetry. Many of them are in an advanced degree of oxidation [9]. However, they are characterized by a geometrical symmetry (Fig.…”

“…In a tentative for systematization of natural micro molecular organic compounds, the elements of symmetrymirror plane of symmetry, center of symmetry and (alternating) axis of symmetry have been considered as principles (criteria) for the aimed task. It has been constantly searched the capacity of organic compounds to exist in a symmetric form [1][2][3][4][5][6][7][8][9][10][11]. Symmetry is discussed in connection with planes of symmetry.…”

“…xylitol, ribitol and numerous synthetic compounds [10,12]. Natural and synthetic organic compounds have been classified, in a tentative of their systematization, in three types [5,[9][10][11].…”

“…The three groups are (bio)chemically interchangeable. In preceding papers we have demonstrated that almost all natural micromolecular combinations [1,[3][4][5][6][7][8][9] appear as constit., however they all are possible generators of chemical symmetry. Archaic (primitive) type is also represented in natural chemistry.…”