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Alteration of the oxygenatom of the semicarbazones by isosteres did not enhance anticonvulsant properties.
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Thinking of Water as Particles Yes, water is actually two hydrogen atoms with an oxygenatom.
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We are composed mostly of water-moleculesconsisting of an oxygenatom bound to two hydrogen atoms.
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Water, of course, is made up of H 2 O -two hydrogen atoms, and one oxygenatom.
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Clearly, then, the oxygenatom, like a creature with two hands, is able to clutch two other atoms.
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There are two hydrogen atoms bonded to one oxygenatom-butthe hydrogen atoms have a 108-degreeangle between them.
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In the liquid form, the hydrogen atoms of one water molecule are attracted to the oxygenatom of another molecule.
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The powerful electron cycling capability of iridium and the cooperative iridium-aluminum interplay are emphasized to drive the oxygenatom-transfer behavior.
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The substrate-binding site is formed by an opening above the heme that enables organic substrates to approach the activated oxoferryl oxygenatom.
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The reaction is proposed to occur through two hydrogen shifts from the nitrogen to the oxygenatom giving rise to multicentered transition states.
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Water molecules have a more V-shaped geometry, with an oxygenatom at the vertex bonded with two hydrogen atoms, protruding like a rabbit-ear antenna.
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In vitro (18)O(2) experiments establish that the oxygenatom incorporated into the substrate is derived from molecular oxygen.
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The oxygenatom, being divalent, is capable of uniting itself to two other atoms of oxygen or other elements, and thus with oxygen forming ozone.
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In this model the oxygenatom of the sulfonamide make hydrogen bond interactions with the catalytic residues Ser170 and Ala172.
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Because the oxygenatom exerts a stronger pull on the electrons (small dots) it shares with the hydrogen atoms, the water molecule is electrically unsymmetrical.
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For example, oxygenatoms can glow green or red, depending on their altitude.