ライフサイエンスコーパス: hydroxo

1 sulfur ligands, one oxo group, and one water/hydroxo.

2 d inorganic oxygenic bridge, neither oxo nor hydroxo.

3 The Ni(II) macrocyle forms hydroxo (14) and cyanide complexes (15) analogous to 1 a

4 py)(2)](2-), 4(2-), where tPaO(5-) is the 3-(hydroxo-[2,2':6',2''-terpyridine]-6,6''-diyl)bis(phospho

5 ren))](+) (11), is shown to form en route to hydroxo 9.

6 Multimeric oxo-hydroxo Al clusters function as models for common minera

7 the addition of water to form a mixed-donor hydroxo/amido dicopper(II) complex, which was independen

8 -neutral H-atom reductions of these iron(IV)-hydroxo and -oxo porphyrin species that are within 1 kca

9 aqueous [D(6)]DMSO (1)H NMR signals for the hydroxo and aquo ligands of Ga(13) were detected, thus s

10 substrate to produce the proposed iron(III)-hydroxo and caged substrate radical.

11 riers for migratory insertion into the metal-hydroxo and metal-amido bonds are lower than those for i

12 Manganese(IV,V)-hydroxo and oxo complexes are often implicated in both c

13 Up to 20% of the total Fe(III) is found in hydroxo and sulfato complexes.

14 s) and pK(a) values of a series of tricopper hydroxo and tricopper aqua complexes as synthetic models

15 , it is linked by a single oxygen bridge (mu-hydroxo) and a fatty acid ligand.

16 ved aliphatic thiolate-ligated Fe-peroxo, Fe-hydroxo, and Fe(IV) oxo compounds.

17 up and an equatorial plane consisting of one hydroxo- and two oxo- groups.

18 a series of NU-1000-supported bimetallic-oxo,hydroxo,aqua clusters.

19 Even with the less stable hydroxo/aqua complex [Cp*(2)Ir(2)(mu-OH)(3)]OH, nanopart

20 chelate complex via the displacement of two hydroxo/aquo groups at the equatorial plane of a single

21 ate (L-arginine) is hydroxylated to N(omega)-hydroxo-arginine.

22 support Fe(III)-(hydro)peroxo (or Fe(V)-oxo-hydroxo) as the reactive species because there is no sou

23 n transfer-proton transfer) by the iron(III)-hydroxo, as opposed to a second HAA.

24 ecular reaction mechanism involving a Mn(IV)-hydroxo based intermediate appears to be slower for O2 f

25 ernative surface modifications: a cobalt oxo/hydroxo-based (CoO(x)) overlayer, reported previously to

26 ure following photolysis of a (mu-peroxo)(mu-hydroxo)bis[bis(bipyridyl)c obalt(III)] complex.

27 coupled Mn(III)/Fe(III) dimer linked by a mu-hydroxo/bis-mu-carboxylato bridging network.

28 ve larger changes in the metal-oxo and metal-hydroxo bond lengths, which is traced to the difference

29 ddition of C-H bonds across Ru-X (X = amido, hydroxo) bonds of TpRu(PMe3)X fragments {Tp = hydridotri

30 When O4 is taken as a mu-hydroxo bridge acting as a hydrogen-bond donor to water5

31 rous species, indicative of (1) at least one hydroxo bridge between the iron ions for both states and

32 ved ligand observed in the (1,2)H ENDOR to a hydroxo bridge between the irons of the mixed-valent dii

33 ongly indicative of the presence of a mu-oxo/hydroxo bridge between the irons; protein ligands for ea

34 and postulated the presence of an additional hydroxo bridge plus a terminal hydroxyl bound to Fe(III)

35 droxo bridged diferric core, which loses one hydroxo bridge upon reduction.

36 and suggest that the diiron center contains hydroxo bridge(s) in the diferric state, as observed for

37 two mu-oxo bridges but does not contain a mu-hydroxo bridge.

38 sed in the S0 state contains an exchangeable hydroxo bridge.

39 ange is triggered by deprotonation of the mu-hydroxo bridge.

40 ragment (T model), and does not contain a mu-hydroxo bridge.

41 deprotonation of water to form a proposed mu-hydroxo bridged Mn(2+)Mn(3+) intermediate.

42 The tris-hydroxo-bridged chromium dimer, known as Kremer's dimer,

43 FS) spectra indicate the presence of bis-oxo/hydroxo-bridged Co subunits incorporated into higher nuc

44 ile solvents at room temperature, giving the hydroxo-bridged dicopper complex) has allowed for its st

45 idine and two carboxylate ligands to an oxo-/hydroxo-bridged diiron active site, as well as a hydroph

46 -characterized soluble MMO contains a bis-mu-hydroxo-bridged diiron cluster.

47 three Mn2+ ions via coordination to form mu-hydroxo-bridged intermediates, apo-WOC-[Mn(mu-OH)2Mn]3+

48 oxidation products were identified as novel hydroxo-bridged mixed-valent Cu(II)Cu(III) and symmetric

49 ofactor to an R2c-like cofactor, a mu-oxo/mu-hydroxo-bridged Mn(III)/Fe(III) dimer.

50 at activated catalyst films comprise bis-oxo/hydroxo-bridged nickel centers organized into sheets of

51 Fe-O(Si) bonds are cleaved and new bonds (mu-hydroxo bridges) form between these Fe centers and those

52 compounds with their large positive charge, hydroxo bridges, and divergent isomerization/oligomeriza

53 ection of the methyl group closer to the oxo/hydroxo by the longer side chain.

54 ive sites, the importance of this particular hydroxo-carboxylate interaction is relatively unexplored

55 e oxo ligand in the oxidized enzyme has some hydroxo character, which is ascribed to a hydrogen bondi

56 nd pinpoint the pivotal importance of Pd(II)-hydroxo-chelate complexes for the reactivity-stability i

57 A series of tetranuclear oxo/hydroxo clusters comprised of three Fe centers and a red

58 unds, a model is proposed wherein the Co oxo/hydroxo clusters of Co-Pi are composed of edge-sharing C

59 n reaction of 6((i)Pr) with water, monomeric hydroxo complex 5((i)Pr) is quantitatively regenerated.

60 complex 1 and norbornene (NB) is mediated by hydroxo complex 5.

61 The corrole radical cation manganese(IV) hydroxo complex has been fully characterized by EPR, (1)

62 Isolation of this hydroxo complex in pure form was complicated by its inst

63 a bacterial HO, while the anisotropy for the hydroxo complex reveals a conventional (d(xz), d(yz))(1)

64 The mono-mu-hydroxo complex {[Cu(tmpa)]2-(mu-OH)}(3+) (1) can underg

65 room-temperature-stable mononuclear Ni(III)-hydroxo complex, [Na(15c5)][Ni(PS3")(OH)] ([Na(15c5)][2]

66 ue to enhanced formation of reactive surface hydroxo complexation.

67 F leads to the corresponding monomeric Ir(I) hydroxo complexes 5(R) in good to excellent yields of 70

68 (2)) react with O2 to form the dearomatized hydroxo complexes [((t)BuPNP*)Ir(R)(OH)] ((t)BuPNP* = de

69 described that interconvert vanadium(IV) oxo-hydroxo complexes [V(IV)O(OH)(R(2)bpy)(2)]BF(4) (1a-c) a

70 er spectroscopy, multiple diferric mu-oxo/mu-hydroxo complexes and small polynuclear ferric clusters

71 demonstrated for the mononuclear uranyl(VI) hydroxo complexes for the first time.

72 equilibrium between arylpalladium amido and hydroxo complexes prior to the turnover-limiting step.

73 Copper-bipyridine-hydroxo complexes rapidly form in situ from simple comme

74 fonato phenyl) porphyrin ((TSPP)Rh) aquo and hydroxo complexes react with a series of olefins in wate

75 sterically unencumbered, first-row metal-oxo/hydroxo complexes that differ by a hydrogen atom (H(+) +

76 present study, we examined a pair of Mn(III)-hydroxo complexes that differ by a single functional gro

77 lly relevant dinuclear ruthenium hydride and hydroxo complexes were synthesized, and their structures

78 undreds to thousands of Fe(III) diferric oxo/hydroxo complexes, by reactions of Fe(II) ions with O(2)

79 ociation free energies (BDFEs) of two ferric hydroxo complexes, differentiated by their noncovalent i

80 In this report, the BDFE(OH) of two dicopper-hydroxo complexes, {[LCu](2)-(mu-OH)}(3+) and {[LCu](2)-

81 both the ferric high-spin aquo and low-spin hydroxo complexes.

82 benzo[ c]cinnoline, amidinate, formate, and hydroxo complexes.

83 r's rule holds for heme and non-heme oxo and hydroxo complexes.

84 tive to values for most transition metal oxo/hydroxo complexes.

85 ee Sc(3+) ion and by the dissociation of its hydroxo-complexes (ScOH(2+), Sc(OH)2(+) and Sc(OH)3) was

86 uptake were investigated, suggested that Sc hydroxo-complexes were internalized by C. reinhardtii.

87 transmembrane transport of undissociated Sc hydroxo-complexes.

88 pressive water oxidation catalyst, formed by hydroxo coordination to 3(2+) under basic conditions.

89 n(IV)Fe(III) cofactor as having a mu-oxo, mu-hydroxo core and a terminal hydroxo ligand on the Mn(IV)

90 The mu-oxo/mu-hydroxo core structure provides an important sigma/pi su

91 d through the H-bond between the oxo(Fe) and hydroxo(Cu) ligands, while the Cu(II) and Tyr(*) are fer

92 s the structure of framework-bound monomeric hydroxo-Cu(II) in copper-loaded chabazite (CHA).

93 plex by the release of H2O2 and mu-oxo or mu-hydroxo diferric biomineral precursors rather than by ox

94 frozen solution structure and that a mono-mu-hydroxo diferrous species is the catalytically functiona

95 )(mu-O)(PIM)(Ar(Tol)CO(2))(2)] (6) and di(mu-hydroxo)diiron(III) [Fe(2)(mu-OH)(2)(PIM)(Ar(Tol)CO(2))(

96 Oxygenation of 1 afforded a (mu-hydroxo)diiron(III) complex [Fe(2)(mu-OH)(PIM)(Ph(3)CCO(

97 matic compounds by dimanganese mu-oxo and mu-hydroxo dimers [(phen)(2)Mn(IV)(mu-O)(2)Mn(IV)(phen)(2)]

98 , leading to the formation of a rare mono-mu-hydroxo dinuclear Mn(III) complex, [(Mn(III)2(LS)2(OH)]C

99 Hydroxo exchange of U(16)O(2)((16)OH)(+) with H(2)(18)O

100 Peroxo 7 is shown to convert to ferric-hydroxo [Fe(III)(S(Me2)N(tren))(OH)](+) (9, g( ) = 2.24,

101 e X best correlates with a bridged mu-oxo/mu-hydroxo [FeIII(mu-O)(mu-OH)FeIV] structure.

102 eral-acid mechanism and demonstrate that the hydroxo form of the ligated Cu(II) ion is the sole catal

103 bonding, the Fe-O distances for the oxo and hydroxo forms consistently fall within distinct, narrow,

104 nd crystallographic data support an iron(IV)-hydroxo formulation, whereas Mossbauer, X-ray absorption

105 (4)(OH) (pentagonal bipyramid) via one mu(2)-hydroxo group and one mu(2)-oxo group.

106 Moreover, in the 3-Cl HOPDA complex, the 2-hydroxo group is moved by 3.6 A from its position near t

107 esting that a (labeled Fe(OH)) coordinates a hydroxo group.

108 factor is most likely anionic with one axial hydroxo- group and an equatorial plane consisting of one

109 Vibrational modes of surface hydroxo groups covering these particles were first monit

110 Fe ions and alternate terminal Fe-oxo and Fe-hydroxo groups that interact via intramolecular hydrogen

111 al characterization of the first polynuclear hydroxo hafnium cluster isolated from base, [TMA]6 [Hf6

112 at the low-spin species is most likely not a hydroxo-heme derivative.

113 c evidence that could test the presence of a hydroxo intermediate in a catalytically active oxovanadi

114 d, therefore, rules out the possibility of a hydroxo intermediate in the catalytic cycle.

115 The resulting Mn hydroxo intermediate is capable of promoting not only OH

116 supports a notion of a tetramolecular Mn(IV)-hydroxo intermediate that is viable for O2 formation in

117 d is completed upon formation of hydroperoxo-hydroxo intermediate {gamma-[(OOH)Ru-(mu-OH)(2)-Ru(OH)](

118 ized the key Co(III)-hydroperoxo and Co(III)-hydroxo intermediates by using cryogenic ion spectroscop

119 uctural and electronic properties, both the (hydroxo)iron(III) and the (aqua)iron(II) complex reflect

120 The propensity of the (hydroxo)iron(III) complex to undergo H atom abstraction

121 onuclear pseudo-octahedral cis-(carboxylato)(hydroxo)iron(III) complex, which is completed by a tetra

122 that the reaction occurs via formation of a hydroxo-iron(III) complex (4) after the initial H atom t

123 coupling of the resultant carbon radical and hydroxo ligand (oxygen rebound) must generally be averte

124 tructures imply a hydrogen bond between this hydroxo ligand and a cis carboxylate ligand.

125 kyl group of the substrate away from the oxo/hydroxo ligand and closer to the halogen ligand sacrific

126 of [H(3)1](3-) and the oxo and oxygen of the hydroxo ligand are observed in all the complexes.

127 cates the presence of a solvent-derived aqua/hydroxo ligand bound either terminally or in a bridging

128 g bonds with zeolite lattice oxygens and the hydroxo ligand hydrogen-bonded to the cage.

129 dal Ni(III) center, in which the coordinated hydroxo ligand is stabilized by secondary coordination s

130 ing a mu-oxo, mu-hydroxo core and a terminal hydroxo ligand on the Mn(IV).

131 mber of intramolecular H-bonds involving the hydroxo ligand reduces the nucleophilicity of the CoIII-

132 l compared to .O(t)Bu and the absence of the hydroxo ligand that helps to stabilize the resulting Fe(

133 e, the active site of each enzyme contains a hydroxo ligand, and X-ray crystal structures imply a hyd

134 esponds to an S = (7)/(2) form, with W1 as a hydroxo ligand.

135 ore consistent with a bridging than terminal hydroxo ligand.

136 ing an intramolecular hydrogen bond with the hydroxo ligand.

137 rmulation of Mn(IV)PFOM as having a terminal hydroxo ligand.

138 al aqua ligands and Mn(V)PFOM has a terminal hydroxo ligand.

139 that X contains a terminal aqua (most likely hydroxo) ligand to Fe(III) in addition to one or two mu-

140 n bonding interactions between bound aquo or hydroxo ligands and the secondary coordination sphere in

141 for Mn(IV)PFOM where both terminal aqua and hydroxo ligands can be rationalized, but the reactivity

142 tem for the reversible condensation of metal hydroxo ligands to form metal oxo moieties.

143 sociated protonation of the bridging oxo and hydroxo ligands, generated by O-O cleavage, to form wate

144 e [WOS(OH)(bdt)] (-), with basal sulfido and hydroxo ligands.

145 ) and Mn(III) complexes with terminal oxo or hydroxo ligands.

146 ygen is the source of the oxygen atom in the hydroxo ligands: [CoIIIH3buea(16OH)]- has a -(O-H) band

147 iron(III) states: the mu-oxo (major)- and mu-hydroxo (minor)-bridged diiron centers.

148 thesis of non-heme high-valent mu-oxo and mu-hydroxo Mn species from Mn(II) precursors and O2 .

149 a Mn(II) precursor to yield mu-oxo and/or mu-hydroxo Mn(III) dimers.

150 ly generates either a di-mu-oxo or mu-oxo-mu-hydroxo Mn(IV) complex.

151 x reactivity between the metal oxo and metal hydroxo moieties for the same redox active metal ion in

152 e mixing a phenol with the readily available hydroxo multicopper clusters, particularly the [Cu(tmeda

153 e processes that govern the equilibrium aqua-hydroxo (O2H3)(-)<-->hydroxyl (OH) in Sc-MOFs, are studi

154 open cubane model of the WOC containing a mu-hydroxo O4 changes from an S = (5)/(2) form to an S = (7

155 anism involves cross-links between metal oxo/hydroxo oligomers and ionomers.

156 aining Co(II/III) and Ca(II) ions and either hydroxo or aquo ligands.

157 (JS1 degrees S2), which is consistent with a hydroxo or oxo bridge between the two irons.

158 e manganese and iron complexes with terminal hydroxo or oxo ligands are proposed to mediate the trans

159 re are correlations consistent with large Zr hydroxo-/oxo-bridged clusters.

160 cores (M(II) = Ca(II), Ba(II)) in which the hydroxo oxygen atom is derived from O(2).

161 boxylate oxygenases, explaining diferric oxo/hydroxo product release in ferritin vs. diiron cofactor

162 is bridged by two solvent molecules (oxo and hydroxo, respectively) together with a micro 1,3 bridgin

163 tal-organic framework (MOF) bearing the aqua-hydroxo species (O2H3)(-) in the framework, as well as t

164 equilibrium between aquo Co(II) and Co(III) hydroxo species accompanied with a rapid surface equilib

165 Additionally, the ferric hydroxo species are differentiated by their reactivity t

166 y are discussed in terms of the metal cation hydroxo species likely to be present in solution and the

167 i catalyst via formation of a new Ni-bridged hydroxo species that was characterized by X-ray crystall

168 ion, lifetime) of the individual mononuclear hydroxo species were derived to serve as a reference dat

169 The latter is consistent only with a hydroxo species, either Fe(IV) or Fe(III).

170 rate oxidation is executed by an iron(V)-oxo-hydroxo species, in parallel to a Fenton-type process wh

171 n due to changes of reactive Cr(III) surface hydroxo species.

172 e site of two ferrous ions to a diferric oxo/hydroxo species.

173 importance of studying the possible role of hydroxo-species in trace metal uptake.

174 cell metabolism is affected predominantly by hydroxo-species of U(VI) with an IC50 threshold of appro

175 n OH(-) ligand with heme a3 in a strained mu-hydroxo structure.

176 kinetics of formation and consumption of the hydroxo surface intermediate involved.

177 ans to the oxo atom in 2 with subsequent oxo-hydroxo tautomerism for its incorporation as the oxo ato

178 lopeptin, reveals evidence supporting oxo<-->hydroxo tautomerism of the Fe(IV)-oxo species in the non

179 o a cis-H(18)O-Fe(V)=O species, and then oxo-hydroxo tautomerization.

180 (mu-OH)(PIM)(Ph(3)CCO(2))(3)] (4), a hexa(mu-hydroxo)tetrairon(III) complex [Fe(4)(mu-OH)(6)(PIM)(2)(

181 having one single atom bridge (e.g., aqua or hydroxo) together with one or two carboxylate bridges.

182 r is linked by two oxygen bridges (mu-oxo/mu-hydroxo), whereas in R2lox, a two-electron oxidant, it i