pentacoordinate
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Apicophilicity — is the phenomenon in which electronegative substituents of trigonal bipyramidal pentacoordinate compounds prefer to occupy apical positions (Lap).The term apicophilicity was first proposed by Earl L. Muetterties in 1963 for the structural… … Wikipedia
Hemerythrin — (also spelled haemerythrin; from Greek words αίμα = blood and ερυθρός = red) is an oligomeric protein responsible for oxygen (O2) transportation in the marine invertebrate phyla of sipunculids, priapulids, brachiopods, and in a single annelid… … Wikipedia
Hypervalent molecule — A hypervalent molecule is a molecule that contains one or more main group elements formally bearing more than eight electrons in their valence shells. Phosphorus pentachloride (PCl5), sulfur hexafluoride (SF6), the phosphate (PO43−) ion, chlorine … Wikipedia
SN2 reaction — The SN2 reaction (also known as bimolecular nucleophilic substitution) is a type of nucleophilic substitution, where a lone pair from a nucleophile attacks an electron deficient electrophilic center and bonds to it, expelling another group called … Wikipedia
Titanium tetrachloride — IUPAC name Titanium tetrachloride … Wikipedia
Acetylacetone — Acac redirects here. For other uses, see ACAC. Chembox new ImageFile=AcacH.png IUPACName=Pentane 2,4 dione OtherNames=Hacac Formula=C5H8O2 MolarMass=100.13 g/mol CASNo=123 54 6 Density=0.98 g/ml MeltingPt=−23 °C BoilingPt=140 °C Solubility=16… … Wikipedia
Monsanto process — The Monsanto process is an important method for the manufacture of acetic acid by catalytic carbonylation of methanol. This process operates at a pressure of 30–60 atm and a temperature of 150–200 °C and gives a selectivity greater than 99%. It… … Wikipedia
Molecular Borromean rings — are an example of a mechanically interlocked molecular architecture in which three macrocycles are interlocked in such a way that breaking any macrocycle allows the others to disassociate. They are the smallest examples of Borromean rings. The… … Wikipedia
Sodium phosphide — Other names sodium phosphide, common trisodiophosphine … Wikipedia
Palladium(II) cyanide — describes any chemical species with the empirical formula Pd(CN)n(2 n ) . The dicyanide ( n = 2, CAS: [2035 66 7] ) is a coordination polymer of minor significance. It likely has a structure consisting of square planar Pd(II) centers linked by… … Wikipedia
