1,1′,2,2′,3,3′,4,4′-Octa­methyl­ferro­cenium 2,5-dibromo-4-hy­droxy-3,6-dioxocyclo­hexa-1,4-dien-1-olate

In the title salt, octa­methyl­ferrocenium bromanilate, [Fe(C9H13)2](C6HBr2O4), the Fe atom and the bromanilate anion lie on a mirror plane. The octa­methyl­ferrocenium cation adopts an eclipsed conformation. An intra­molecular O—H⋯O hydrogen bond is present in the bromanilate anion. In the crystal, the cations and anions are stacked alternately, forming a one-dimensional columnar structure along [010]

Metallocenium Ionic Liquids

正常造血と貧血4学

Metal-Containing Poly(ionic liquid) Exhibiting Photogeneration of Coordination Network: Reversible Control of Viscoelasticity and Ionic Conductivity

The control of physical properties of soft matters via external stimuli is useful for various applications. Poly(ionic liquid)s are versatile liquid polymers exhibiting ionic conductivity, though the development of photoresponsive poly(ionic liquid)s is still limited. Here, we report the synthesis and properties of a photoreactive poly(ionic liquid) 1a consisting of a Ru sandwich complex [Ru(C5H5){C6H3(OC6H12CN)3}]+ and a polymeric anion -[-CH2–CH(SO2N–SO2CF3)-]n-. Upon UV photoirradiation, the liquid transformed into a rubbery elastomer 2a through the photochemical reaction of the cations. The resultant elastomer is a unique hybrid coordination polymer comprising a cationic coordination network and anionic covalent chains. The elastomer returned to 1a upon heating. The application of light and heat resulted in a coordination structure transformation that caused reversible changes in viscoelasticity and ionic conductivity. The liquid 1a was synthesized by polymerization of ionic liquid 1b containing an H2C═CHSO2N–SO2CF3 anion. UV photoirradiation transformed 1b into a viscous elastomer 2b consisting of a coordination network, though the elastomer changed into 1a upon heating via polymerization of the anion

Ionic liquids from cationic palladium(II) chelate complexes: preparation, thermal properties, and crystal structures

A non-fatal accident with a CGR-Sagittaire accelerator in the Dr Daniel den Hoed Cancer Center (DDHCC) in Rotterdam in 1988 is described. In a period with frequently occurring technical problems, a patient, undergoing fractionated treatment at this accelerator for prostatic cancer, developed severe skin reactions on the right half ventr

Mid- term results of stryker® scorpio plus mobile bearing total knee arthroplasty

BACKGROUND: The mobile bearing knee system was introduced to lessen contact stress on the articular bearing surface and reduce polyethylene wear. The purpose of the current study was to investigate the mid-term results of patients undergoing total knee arthroplasties (TKAs) using Scorpio Plus Mobile Bearing Knee System (Stryker, Mahwah, NJ), and compare the outcomes between patients with osteoarthritis and osteonecrosis (OA·ON group) and patients with rheumatoid arthritis (RA group). METHODS: Eight males and 58 females were followed up for a period of 4.4- 7.6 years from June 1, 2003 to December 31, 2005. There were 53 knees with osteoarthritis, 17 knees with rheumatoid arthritis, and 6 knees with osteonecrosis. Clinical and radiographic follow- up was done using The Japanese Orthopedic Association knee rating score (JOA score) and Knee Society Total Knee Arthroplasty Roentgenographic Evaluation and Scoring System. RESULTS: With regard to the JOA score, there was significant improvement in both groups. The postoperative range of motion was between 0.8°and 116.8° in OA·ON group, and between 0.0° and 113.7° in RA group. There were no significant differences with the radiographic evaluation between two groups. Spontaneous dislocation of a polyethylene insert occurred in one patient, and deep infection was occurred in one patient. CONCLUSION: There was significant improvement with regard to the clinical and radiographic results of patients undergoing TKAs using the model. The risk of polyethylene insert dislocation related to the mobile bearing TKA is a cause for concern

Synthesis and Reactivity of Cyclopentadienyl Ruthenium(II) Complexes with Tris(alkylthio)benzenes: Transformation between Dinuclear and Sandwich-Type Complexes

To explore the structural transformation of cyclopentadienyl ruthenium (CpRu) complexes in response to external stimuli, the reaction of [RuCp(MeCN)3][X] (X = PF6, (FSO2)2N [= FSA]) and tris(alkylthio)benzenes (1,3,5-C6H3(SR)3; L1: R = Pr, L2: R = Me) was investigated, and the crystal structures and thermal properties of the products were examined. The reaction produced the sandwich complexes [RuCpLn][X] or dinuclear complexes [Ru2Cp2(μ-Ln)2(CH3CN)m][X]2 (X = PF6, FSA) depending on the reaction conditions. The sandwich complex [RuCpL1][FSA] was an ionic liquid. The solids of dinuclear complexes transformed into the thermodynamically stable sandwich complexes upon heating accompanied by acetonitrile loss. This change resulted in a transformation from crystal to ionic liquid for complexes with the FSA anion. UV irradiation of the sandwich complex [RuCpL1][PF6] in methanol produced the dinuclear complex [Ru2Cp2(μ-L1)2L12][PF6]2. The complex transformed into the sandwich complex upon heating