Structures of Molecules and of Molecular Systems of Informatics

The terms contents and structure need to be discerned. For example, the molecule of water consists of one atom of oxygen and two atoms of hydrogen. But, the structure of the water molecule requires to give mutual distribution, within the three dimensional space, of the three atoms that build that molecule. In such a case, the most frequently used form is the so called structural model of a molecule. In this paper, structural models of methane and ethane are discussed in more detail. In this work, also same problems of nanotechnology and genetic engineering are discussed, which require the knowledge about the models of structures of molecules as well.