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• Chromium
  Chromium, unlike metals such as iron and nickel, does not suffer from [[hydrogen embrittlement]]. However, it does suffer from nitrogen embrittlement, react Chromium(VI) compounds in solution can be detected by adding an acidic [[hydrogen peroxide]] solution. The unstable dark blue [[chromium(VI) peroxide]] (CrO<
  51 KB (7,299 words) - 21:34, 20 September 2010
• Formaldehyde
  ...hyde is a naturally occurring substance in the environment made of carbon, hydrogen and oxygen. Natural processes in the upper [[Earth's atmosphere|atmosphere] When combined with hydrogen sulfide it forms [[trithiane]].<ref>{{OrgSynth | last1 = Bost | first1 = R.
  34 KB (4,726 words) - 21:35, 20 September 2010
• Porphin
  ...of four [[pyrrole]] rings joined together by four methine (=[[Carbon|C]][[Hydrogen|H]]&mdash;) [[functional group|group]]s to form a larger [[macrocycle]] rin ...m]]s, all of which are part of a [[Conjugated system|conjugated]] [[double bond]] system, giving the [[molecule]] its aromatic character. [[Resonance stru
  3 KB (467 words) - 20:14, 21 September 2010
• Catechol
  Catechol is produced industrially by the hydroxylation of [[phenol]] using [[hydrogen peroxide]]:<ref name=Ullmann>Helmut Fiegel, Heinz-Werner Voges, Toshikazu H ...derivative, [[guaiacol]], converts to catechol via hydrolysis of the CH3-O bond as promoted by [[hydriodic acid]].{{Fact|date=October 2007}}
  11 KB (1,437 words) - 20:14, 21 September 2010
• 1,2-Bis(diphenylphosphino)ethane
  | title = Mechanism of Phosphorus-Carbon Bond Cleavage by Lithium in Tertiary Phosphines. An Optimized Synthesis of 1, 2- Treatment of dppe with conventional oxidants such as [[hydrogen peroxide]] (H₂O₂), aqueous [[bromine]] (Br<sub>2</sub
  5 KB (722 words) - 20:14, 21 September 2010
• Pentetic acid
  ...limited coordination capacity and can form less than eight [[coordination bond]]s with [[ligand]]s. So, after forming a complex with a metal, DTPA still h ..., DTPA is mainly used for sequestering metal ions that otherwise decompose hydrogen peroxide, which is used to bleach pulp in paper making. Several million ki
  6 KB (825 words) - 20:15, 21 September 2010
• Acetylacetone
  ...high in nonpolar solvents; the keto form becomes more favorable in polar, hydrogen-bonding solvents, such as water.<ref>''Solvents and Solvent Effects in Orga ...ons, D.W. and Steiner, W. "Acetylacetone-Cleaving Enzyme Dke1: A Novel C-C-Bond-Cleaving Enzyme." Biochem. J. 369 (2003) 573-581 {{DOI|10.1042/BJ20021047}}
  16 KB (2,268 words) - 20:15, 21 September 2010
• Ethylenediaminetetraacetic acid
  ...p> adopt more complex structures due to (i) the formation of an additional bond to water, i.e. seven-coordinate complexes, or (ii) the displacement of one ...specially Mn²⁺, from catalyzing the [[disproportionation]] of [[hydrogen peroxide]], which is used in "chlorine-free bleaching." In similar manner,
  21 KB (3,011 words) - 16:51, 27 September 2010
• Partition coefficient
  ...camethylferrocene attached mechanically to a graphite electrode | author = Bond AM, Marken F | title = Mechanistic aspects of the electron and ion transpor ...get reasonable correlations, the most common elements contained in drugs (hydrogen, carbon, oxygen, sulfur, nitrogen, and halogens) are divided into several d
  27 KB (3,780 words) - 20:16, 21 September 2010
• Hydrolysis
  ...molecules of [[water (molecule)|water]] (H₂O) are split into [[hydrogen]] [[cation]]s (H⁺) (conventionally referred to as [[proton]]s) a ...mpounds). It should not be confused with [[hydrogenolysis]], a reaction of hydrogen.
  14 KB (2,113 words) - 20:16, 21 September 2010
• Stability constants of complexes
  ...petition for the ligand, L, between the metal ion, Mⁿ⁺, and the hydrogen ion, H⁺. This means that there are two simultaneous equilibria t Hence by following the hydrogen ion concentration during a [[titration]] of a mixture of M and HL with [[Ba
  50 KB (7,450 words) - 20:16, 21 September 2010
• Dissociation constant
  ...intermolecular interactions]] between the two molecules such as [[hydrogen bond]]ing, [[electrostatic| electrostatic interactions]], [[hydrophobic]] and [[
  10 KB (1,434 words) - 20:16, 21 September 2010
• Acid dissociation constant
  ...cetate]] ion and the [[hydronium]] ion. Red: oxygen, black: carbon, white: hydrogen.]] ...to A⁻, known as the [[conjugate base]] of the acid, and the [[hydrogen ion]] or [[proton]], H⁺, which, in the case of aqueous solutions
  76 KB (11,861 words) - 20:17, 21 September 2010
• Acid–base reaction
  ...ulfide|H₂S]], [[hydrogen telluride|H₂Te]], and the [[hydrogen halide|hydrohalic acids]]. However, Davy failed to develop a new theory, co === Liebig's hydrogen theory of acids ===
  29 KB (4,415 words) - 20:17, 21 September 2010
• Self-ionization of water
  ::[H₃O⁺] = molarity of hydrogen or hydronium ion, and ...ter molecules by the [[Grotthuss mechanism]]; and a change in the hydrogen bond network in the solvent isolates the two ions, which are stabilized by solva
  9 KB (1,347 words) - 20:17, 21 September 2010
• Raoult's law
  This law is strictly valid only under the assumption that the [[chemical bond|chemical interactions]] ''between'' the two liquids is equal to the bonding ...chloroform and acetone show such an attraction by formation of a hydrogen bond.
  11 KB (1,748 words) - 20:17, 21 September 2010
• Dissociation (chemistry)
  ...ut in water, a [[covalent]] bond between an [[electronegative]] atom and a hydrogen atom is broken by [[heterolytic fission]], which gives a proton and a negat
  7 KB (979 words) - 20:17, 21 September 2010
• Brønsted–Lowry acid-base theory
  ...ase (chemistry)|base]] is a species with the ability to gain or "accept" a hydrogen cation (proton). ...or nitrogen atom with a lone pair of electrons that can be used to form a bond with a proton.
  6 KB (987 words) - 20:17, 21 September 2010
• Equilibrium chemistry
  ...s [[nitrogenase]]. Much energy is needed initially to break the N-N triple bond even though the overall reaction is exothermic. ...ecies of citric acid as a function of p H. Citric acid has three ionisable hydrogen atoms and thus three p K A values. Below the lowest p K A, the triply proto
  42 KB (6,675 words) - 20:17, 21 September 2010
• Hemoglobin
  ...in hemoglobin form alpha helices, connected by short non-helical segments. Hydrogen bonds stabilize the helical sections inside this protein, causing attractio ...ng. A sixth position can reversibly bind oxygen by a [[coordinate covalent bond]],<ref>[http://wikipremed.com/interdisciplinary_course.php?code=02130001000
  67 KB (9,844 words) - 20:17, 21 September 2010
• Homoconjugation
  ...e stabilization of the [[conjugate base]] by its formation of a [[hydrogen bond]] to the parent acid. A well known case is [[hydrofluoric acid]], which is
  2 KB (258 words) - 20:17, 21 September 2010
• Haber process
  ...reactive because nitrogen molecules are held together by strong [[Chemical bond|triple bonds]]. It was not until the early 20th century that this method wa ...cess, which is only concerned with synthesizing ammonia from nitrogen and hydrogen.
  16 KB (2,339 words) - 20:17, 21 September 2010
• Hapticity
  | title = Molecular hydrogen complexes: coordination of a σ bond to transition metals | title = Metal Dihydrogen and σ-Bond Complexes - Structure, Theory, and Reactivity
  11 KB (1,575 words) - 20:18, 21 September 2010
• Oxidative addition
  ...n. This process proceeds with retention of configuration about the double bond. ...]]. Reductive elimination is the key product releasing step of several C-C bond formation coupling reactions.<ref>Organometallics, 2005, 24, 715. {{DOI|10.
  3 KB (457 words) - 20:18, 21 September 2010
• Pincer ligand
  ...activation process for complexes that often limits their ability for [[C-H bond activation]]. The organic substituents also define a hydrophobic pocket ar ...ynes]]⁶, [[alkane dehydrogenation]]^7,8, and transfer hydrogen [[catalysis]].⁹ They have also recently been studied for their u
  5 KB (747 words) - 20:18, 21 September 2010
• Coordination sphere
  ...es where the ligands in the first coordination ligands are strong hydrogen-bond donors and acceptors, e.g. respectively [Co(NH₃)₆]<su
  3 KB (492 words) - 20:18, 21 September 2010
• Spin crossover
  ...ies of the complex. '''[[X-ray crystallography]]''' is used to measure the bond distances between the metal and the ligands, which give insight into the sp Due to the change in the metal-to-ligand bond distance (M-L) between the HS and LS state, the vibrational modes of the M-
  29 KB (4,717 words) - 20:18, 21 September 2010
• Propanoic acid
  ...ally-occurring [[carboxylic acid]] with [[chemical formula]] [[carbon|C]][[hydrogen|H]]₃CH₂C[[oxygen|O]]OH. It is a clear liquid with a ...y adding salt. As with acetic and formic acids, it consists of [[hydrogen bond]]ed pairs of molecules both as the liquid and vapor.
  10 KB (1,395 words) - 22:06, 21 September 2010
• Cyclopropane
  ...] linked to each other to form a ring, with each carbon atom bearing two [[hydrogen]] atoms. Cyclopropane and [[propene]] have the same [[empirical formula]] b ...on of methylene [[carbene]]s {{Citation needed|date=January 2009}}. [[Bent bond]]s also describe the bonding in cyclopropane.
  16 KB (2,099 words) - 21:00, 24 September 2010
• Ethylene
  ...from its oil-forming property). Because it contains a carbon-carbon double bond, ethylene is classified as an ''unsaturated hydrocarbon.'' Ethylene is wide ...about the C-C bond is a high energy process that requires breaking the π-bond.
  32 KB (4,462 words) - 21:01, 24 September 2010
• Xenon
  ...em of the low terrestrial xenon may potentially be explained by [[covalent bond]]ing of xenon to oxygen within [[quartz]], hence reducing the outgassing of ...ure process ([[s-process]]) of [[red giant]] stars that have exhausted the hydrogen at their cores and entered the [[asymptotic giant branch]],<ref>{{cite jour
  82 KB (11,842 words) - 21:02, 24 September 2010
• Chloroform
  ...s the [[organic compound]] with [[chemical formula|formula]] [[Carbon|C]][[Hydrogen|H]][[Chlorine|Cl]]₃. The colorless, sweet-smelling, dense liquid ...G|last5=Snoeijs|first5=P|title=Effects of temperature on the production of hydrogen peroxide and volatile halocarbons by brackish-water algae.|volume=64|issue=
  21 KB (2,827 words) - 21:03, 24 September 2010
• Vegetable fats and oils
  ...bonds with the two carbon atoms. The elimination of double-bonds by adding hydrogen atoms is called ''[[saturated fat|saturation]]''; as the degree of [[satura ..., each carbon forming a new single-bond with a hydrogen atom. Adding these hydrogen atoms to the oil makes it more solid, raises the [[smoke point]], and makes
  32 KB (4,810 words) - 19:39, 13 October 2010

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