Energetic “high

In [Cl3Sn(P02Cl2) P0Cl3]2 (type (IVa)) it decreases to 118° for example (77). The reason may be found in the ability of the P-Cl bond, to involve d c7 )-orbitals, and thus to relieve the p d ) bond, which induces a large OPO bond an e. Because of the energetically highly excited c7-levels of the fluorine ligands, the P-F bond can do this only to a very small extent. 

The standard redox potential of Ru(III)L3/Ru(II)L3 equals 1.56 V( proton-ated form). Even energetically highly demanding processes, such as... 

Nitration of the amine (139) with mixed acid yields the energetic nitramine (140). The same reaction with sodium nitrite in sulfuric acid, or with nitrosyl fluoride in methylene chloride, yields the nitrosamine (141), which is also an energetic high explosive. ... 

In pyridine the energetically high-lying 2s and 2px AO s of the N atom mix to form the n MO. In X -phosphorin a similar situation arises if one mixes the high-lying 3s and 3px orbitals of phosphorus. Since the s orbital component is greater... 

Photoreduction. Only very strong reducing agents are able to perform the one-electron reduction of C02 to C02-, which is difficult to produce by photochemical means. Two-electron reduction, that is, the formation of formic acid (formate), in turn, is energetically highly favorable. 

Much of the primitive planetary material in the Solar System, which includes primitive meteorites, IDPs, and samples returned from Stardust, have been processed repeatedly within the protoplanetary disk by energetic, high-temperature events during the course of the first few million years of its existence. The strongest evidence for such processing comes from primitive meteorites known as chondrites. Chondrites are typically referred to as defining t=0 for the Solar System at... 

The imino-enol tautomer of quanine is energetically highly unfavorable (92.6 kJ mole-1)- This makes the tautomer mechanism for transversion highly unlikely. 

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