- trigonal ring
-
тригональное кольцо
English-Russian dictionary of geology. 2011.
trigonal ring
Смотреть что такое "trigonal ring" в других словарях:
Ring strain — is an organic chemistry term that describes the destabilization of a cyclic molecule such as a cycloalkane due to the non favorable high energy spatial orientations of its atoms. Non cyclic molecules do not exhibit ring strain because their… … Wikipedia
Правила Болдуина — для замыкания цикла ( … Википедия
Polyhedral skeletal electron pair theory — In chemistry the polyhedral skeletal electron pair theory provides electron counting rules useful for predicting the structures of clusters such as borane and carborane clusters. The electron counting rules were originally formulated by Kenneth… … Wikipedia
coordination compound — Chem. complex (def. 10). Also called coordination complex. * * * ▪ chemistry Introduction any of a class of substances with chemical structures in which a central metal atom is surrounded by nonmetal atoms or groups of atoms, called ligands… … Universalium
organosulfur compound — ▪ chemical compound Introduction also spelled organosulphur compound , also called organic sulfur compound a subclass of organic substances that contain sulfur and that are known for their varied occurrence and unusual properties. They are… … Universalium
Crystal structure of boron-rich metal borides — Two single crystals of YB66 (1 cm diameter) grown by floating zone technique using (100) oriented seeds. In the top crystal, the seed (left from the black line) has same diameter as the crystal. In the bottom crystal (sliced), the seed is much… … Wikipedia
Samarium — promethium ← samarium → europium ↑ Sm ↓ … Wikipedia
Quartz — This article is about the mineral. For other uses, see Quartz (disambiguation). Quartz Quartz crystal cluster from Tibet General Category … Wikipedia
Metalloprotein — The structure of hemoglobin. The heme cofactor, containing iron, shown in green. Metalloprotein is a generic term for a protein that contains a metal ion cofactor.[1] Metalloproteins have many different functions in cells … Wikipedia
Polyedre uniforme — Polyèdre uniforme Un polyèdre uniforme est un polyèdre qui a pour faces des polygones réguliers et peut passer d un sommet à l autre (i.e. il existe une isométrie qui applique un sommet quelconque sur un autre. Il en découle que tous les sommets… … Wikipédia en Français
Polyèdre uniforme — Un polyèdre uniforme (en) est un polyèdre qui a pour faces des polygones réguliers et tel qu il existe une isométrie qui applique un sommet quelconque sur un autre. Il en découle que tous les sommets sont congruents, et que le polyèdre… … Wikipédia en Français
