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H 2 salen may be synthesized by the condensation of ethylenediamine and salicylaldehyde. [3] Salcomine, a complex of salen with cobalt Jacobsen's salen-Mn catalyst. Complexes of salen with metal cations can often be made in situ, i.e., without isolating the H 2 salen. [4] [5] H 2 salen + M 2+ → M(salen) + 2 H +
A Statement of Assets, Liabilities, and Net Worth (SALN) [1] [2] is an annual document that all de jure government workers in the Philippines, whether regular or temporary, must complete and submit attesting under oath to their total assets and liabilities, including businesses and financial interests, that make up their net worth. [3]
3,4-Methylenedioxyphenylpropan-2-one [1] or piperonyl methyl ketone (MDP2P or PMK) is a chemical compound consisting of a phenylacetone moiety substituted with a methylenedioxy functional group. It is commonly synthesized from either safrole (which, for comparison, is 3-[3,4-(methylenedioxy)phenyl]-2-propene) or its isomer isosafrole via ...
[1] [2] In some cases, molecules that form the monolayer do not interact strongly with the substrate. This is the case for porphyrins on HOPG [3] and two-dimensional supramolecular networks [4] of PTCDA on gold [5]. In other cases, the head group has a strong affinity for the substrate and anchors the molecule. [6]
The vertical growth of salt formations creates pressure on the upward surface, causing extension and faulting. [3] Once the salt completely pierces the overburden, it can rise through a process known as passive diapirism where the accumulation of sediments around the diapir contribute to its growth and eventually form into a dome. [2]
Plutonium(IV) fluoride is produced in the reaction between plutonium dioxide (PuO 2) or plutonium(III) fluoride (PuF 3) with hydrofluoric acid (HF) in a stream of oxygen (O 2) at 450 to 600 °C. The main purpose of the oxygen stream is to avoid reduction of the product by hydrogen gas, small amounts of which are often found in HF.
The 3-3-2 formation consists of three linemen, three linebackers and two defensive backs. It is one of the most flexible formations, allowing multiple looks and blitz packages and freeing the middle linebacker from most pass coverage responsibilities; this way, the middle linebacker can be used for stopping the run.
In polymer physics, spherulites (from Greek sphaira = ball and lithos = stone) are spherical semicrystalline regions inside non-branched linear polymers. Their formation is associated with crystallization of polymers from the melt and is controlled by several parameters such as the number of nucleation sites, structure of the polymer molecules, cooling rate, etc. Depending on those parameters ...