The influence of Fe(II) on the dissimilatory bacterial reduction of an Fe(III) aqueous complex (Fe(III)-citrate(aq)) was investigated using Shewanella putrefaciens strain CN32. The sorption of Fe(II) on CN32 followed a Langmuir isotherm. Least-squares fitting gave a maximum sorption capacity of Qmax = 4.19 x 10(-3) mol/10(12) cells (1.19 mmol/m2 of cell surface area) and an affinity coefficient...

In the title compound, [Fe(C(12)H(8)N(3)O(2))(2)][Fe(C(12)H(8)N(3)O(2))(CN)(3)]·H(2)O, the Fe(3+) ions in the cation and anion each lie in a slightly distorted octa-hedral coordination environment. The solvent water mol-ecule is disordered over three positions with occupancies of 0.401 (7), 0.322 (7) and 0.277 (6). The water content was confirmed by thermogravimetric data.

OBJECTIVE To evaluate the feasibility of using magnetic iron oxide (Fe(3)O(4))-dextran-anti-β-human chorionic gonadotropin (HCG) nanoparticles as a gene vector for cellular transfections. STUDY DESIGN Fe(3)O(4)-dextran-anti-β-HCG nanoparticles were synthesized by chemical coprecipitation. The configuration, diameter, and iron content of the nanoparticles were detected by transmission electron...

The reactivity of the trigonal bipyramidal iron(I) complex [SiP(iPr)(3)]Fe(N(2)) ([SiP(iPr)(3)] = (2-iPr(2)PC(6)H(4))(3)Si(-)) toward organoazides has been examined. 1-Adamantylazide was found to coordinate the iron center to form stable [SiP(iPr)(3)]Fe(eta(1)-N(3)Ad). Aryl azides instead afforded unstable [SiP(iPr)(3)]Fe(N(3)Ar) species that decayed gradually to regenerate [SiP(iPr)(3)]Fe(N(2)...

We have successfully controlled the size of magnetic nanoparticles by adjusting the surfactant/solvent ratio. Gamma-Fe(2)O(3) nanoparticles of 5.6 and 12.7, and Fe(0) nanoparticles of 22.3 nm in diameter were prepared, all having spherical shape and uniform size as confirmed by TEM. Mössbauer spectra confirmed Fe(3+) for the 5.6 and 12.7 nm particles and Fe(3+) and Fe(0) for 22.3 nm particles, ...

Iron-filled multiwall carbon nanotubes (Fe@MWCNTs) were functionalized toward a variety of potential magnetic resonance imaging contrast agents. Oxidized Fe@MWNCTs were covered with PEG5000 via direct esterification or using acyl chloride derivatives. Alternatively, the latter were functionalized with an aminophenol ligand (Fe@O-MWCNT-L). Moreover, pristine Fe@MWCNTs were functionalized with N-...

This paper presents an analysis of [Fe IV] emission based on new identifications and previous measurements of [Fe IV] lines in 30 Doradus, IC 4846, M42, SMC N88A, and SBS 0335−052. The Fe abundances obtained by adding the abundances of the relevant Fe ions (mainly Fe ++ and Fe 3+) are found to be lower, by factors in the range 2.6–5.9, than the Fe abundances implied by [Fe III] emission and an ...

The reaction of Fe(C≡CC≡N)(dppe)Cp (1) with one-half equivalent of [trans-Fe(N≡CMe)2(dppx)2][BF4]2 (dppx = dppe ([2][BF4]2) or dppm ([3][BF4]2)) affords trimetallic [trans-Fe{N≡CC≡CFe(dppe)Cp}2(dppx)2][BF4]2 (dppx = dppe [4][BF4]2; dppx = dppm [5][BF4]2). Both [4][BF4]2 and [5][BF4]2 undergo three, one-electron oxidation processes, arising from sequential oxidation of the two terminal Fe(C≡CR)(...

Two bimetallic assemblies K[Cu(cyclam)][Fe(CN)6] 4H2O 1 and [Cu(L)][Cu(L )][Fe(CN)6] 6.5H2O 2 (cyclam = 1,4,8,11-tetraazacyclotetradecane; L = N,N -bis(2-pyridylmethylene)-1,3-propanediamine and L = N-2-pyridylmethylene-1,3-propanediamine) have been prepared from the reaction of [Fe(CN)6] 3 and the precursors [Cu(cyclam)] and [Cu(L)] , respectively, and their structure and magnetic properties s...

We improved the effectiveness of Pt monolayer electrocatalysts for the oxygen-reduction reaction (ORR) using a novel approach to fine-tuning the Pt monolayer interaction with its support, exemplified by an annealed Pd(3)Fe(111) single-crystal alloy support having a segregated Pd layer. Low-energy ion scattering and low-energy electron diffraction studies revealed that a segregated Pd layer, wit...