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https://www.readbyqxmd.com/read/28205465/biomechanics-of-internal-fixation-modalities-for-middle-phalangeal-base-fracture-dislocation
#1
Gen-Lin Foo, Amit K Ramruttun, Andre Eujin Cheah, Alphonsus Kin-Sze Chong, Tun-Lin Foo
BACKGROUND: Internal fixation modalities of unstable (>50 percent articular involvement) middle phalangeal volar lip fracture-dislocations include interfragmentary screw and volar buttress plating. This study investigates the mechanical properties (yield strength, ultimate tensile strength, and stiffness) of interfragmentary screw (IS), simple buttress plating (BP) and buttress plating with subchondral screw (BP+S). METHODS: Fifteen cadaveric digits (5 index, 5 middle, and 5 ring) were prepared by excising its skin envelope and flexor tendons while preserving the structures around the proximal interphalangeal joint...
March 2017: Journal of Hand Surgery Asian-Pacific Volume
https://www.readbyqxmd.com/read/28178281/surveillance-of-hiv-1-pol-transmitted-drug-resistance-in-acutely-and-recently-infected-antiretroviral-drug-na%C3%A3-ve-persons-in-rural-western-kenya
#2
Harris Onywera, David Maman, Seth Inzaule, Erick Auma, Kennedy Were, Harrison Fredrick, Prestone Owiti, Valarie Opollo, Jean-François Etard, Irene Mukui, Andrea A Kim, Clement Zeh
HIV-1 transmitted drug resistance (TDR) is of increasing public health concern in sub-Saharan Africa with the rollout of antiretroviral (ARV) therapy. Such data are, however, limited in Kenya, where HIV-1 drug resistance testing is not routinely performed. From a population-based household survey conducted between September and November 2012 in rural western Kenya, we retrospectively assessed HIV-1 TDR baseline rates, its determinants, and genetic diversity among drug-naïve persons aged 15-59 years with acute HIV-1 infections (AHI) and recent HIV-1 infections (RHI) as determined by nucleic acid amplification test and both Limiting Antigen and BioRad avidity immunoassays, respectively...
2017: PloS One
https://www.readbyqxmd.com/read/28169476/metallo-polymer-chain-extension-controls-the-morphology-and-release-kinetics-of-microparticles-composed-of-terpyridine-capped-polylactides-and-their-stereocomplexes
#3
Marek Brzeziński, Anna Kacprzak, Marcelo Calderón, Sebastian Seiffert
Control over morphology and porosity of supramolecular complexed polylactide (PLA) microparticles can be achieved by manipulation of the supramolecular interactions between their constituent polymeric building blocks. It is expected that such modular systems are ideal candidates to serve as degradable delivery carriers. In view of this goal, this study reports about a modular fabrication of biodegradable microparticles from terpyridine (TPy) and bisterpyridine (bisTPy) end-functionalized PLAs that can be transiently extended by chain association through differently strong complexation to three metal cations: Ni(2+) , Co(2+) , or Fe(2+) ...
February 7, 2017: Macromolecular Rapid Communications
https://www.readbyqxmd.com/read/28161659/accurate-spectroscopic-calculations-of-the-22-%C3%AE-s-states-and-60%C3%AE-states-of-the-ps-cation
#4
Hui Liu, Deheng Shi, Jinfeng Sun, Zunlue Zhu
This work studied the potential energy curves of 22 Λ-S states, which were yielded from the first two dissociation limits, P((4)Su)+S(+)((4)Su) and P(+)((3)Pg)+S((3)Pg), of the PS(+) cation. The potential energy curves were calculated employing the CASSCF method, which was followed by the internally contracted MRCI approach with Davidson correction. Core- valence correlation and scalar relativistic corrections as well as basis set extrapolation were included. Of these 22 Λ-S states, only the 3(5)Σ(+) state was repluse without the spin-orbit coupling effect, whereas the 3(5)Σ(+), 1(5)Δ, 2(5)Σ(+), and 1(5)Σ(-) states were repulse with the spin-orbit coupling effect accounted for...
January 28, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28078872/molecular-characterization-and-antibiotic-resistance-of-salmonella-serovars-isolated-in-the-apulia-region-of-italy
#5
R Mirgaldi, A Ballini, A M Dionisi, I Luzzi, G Dipalma, F Inchingolo, D De Vito
During the period January 2013-December 2015, 175 cases of human salmonellosis were reported in the Apulia Region of Italy. The aim of this study was to characterize salmonella strains from the standpoints of serovars prevalence, antimicrobial resistance and clonal origin. The serological typing was performed by agglutination against antisera followed by a multiplex polymerase chain reaction (m-PCR). The obtained results were analyzed following the Kauffmann-White scheme. Susceptibility to antimicrobial agents was tested using the disk diffusion method on Muller-Hinton agar plates...
October 2016: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28046248/su-f-i-11-software-development-for-4d-cbct-research-of-real-time-image-gated-spot-scanning-proton-therapy
#6
T Fujii, T Matsuura, S Takao, N Miyamoto, Y Matsuzaki, Y Fujii, K Umegaki, S Shimizu, H Shirato
PURPOSE: To acquire correct information for inside the body in patient positioning of Real-time-image Gated spot scanning Proton Therapy (RGPT), utilization of tomographic image at exhale phase of patient respiration obtained from 4-dimensional Cone beam CT (4D-CBCT) has been desired. We developed software named "Image Analysis Platform" for 4D-CBCT researches which has technique to segment projection-images based on 3D marker position in the body. The 3D marker position can be obtained by using two axes CBCT system at Hokkaido University Hospital Proton Therapy Center...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28017168/comparisons-of-the-effects-of-the-sevoflurane-and-propofol-on-acute-ischemia-reperfusion-and-dna-damages-in-rabbits
#7
Sema Oncul, Lale Karabiyik, Erdem Coskun, Ela Kadioglu, Ozlem Gulbahar
BACKGROUND AND OBJECTIVES: The aim of this study was to compare the effects of sevoflurane and propofol anesthesia on oxidative DNA damage that occurs in low-extremity ischemia and is caused by tourniquet application. METHODS: Fourteen New Zealand rabbits were randomly allocated into two equal groups. Group S (n=7) received sevoflurane (2.5-4 percent) inhalation and Group P (n=7) received a propofol infusion (1-2mg·kg(-1)·min(-1)), after which a pneumatic tourniquet was placed on the right lower extremity...
January 2017: Brazilian Journal of Anesthesiology
https://www.readbyqxmd.com/read/28002039/pulse-wave-imaging-using-coherent-compounding-in-a-phantom-and-in-vivo
#8
Iason Zacharias Apostolakis, Matthew D J McGarry, Ethan A Bunting, Elisa E Konofagou
Pulse wave velocity (PWV) is a surrogate marker of arterial stiffness linked to cardiovascular morbidity. Pulse wave imaging (PWI) is a technique developed by our group for imaging the pulse wave propagation in vivo. PWI requires high temporal and spatial resolution, which conventional ultrasonic imaging is unable to simultaneously provide. Coherent compounding is known to address this tradeoff and provides full aperture images at high frame rates. This study aims to implement PWI using coherent compounding within a GPU-accelerated framework...
March 7, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/27982610/measurement-of-singly-cabibbo-suppressed-decays-%C3%AE-_-c-%C3%A2-p%C3%AF-%C3%AF-and-%C3%AE-_-c-%C3%A2-pk-k
#9
M Ablikim, M N Achasov, S Ahmed, X C Ai, O Albayrak, M Albrecht, D J Ambrose, A Amoroso, F F An, Q An, J Z Bai, O Bakina, R Baldini Ferroli, Y Ban, D W Bennett, J V Bennett, N Berger, M Bertani, D Bettoni, J M Bian, F Bianchi, E Boger, I Boyko, R A Briere, H Cai, X Cai, O Cakir, A Calcaterra, G F Cao, S A Cetin, J Chai, J F Chang, G Chelkov, G Chen, H S Chen, J C Chen, M L Chen, S Chen, S J Chen, X Chen, X R Chen, Y B Chen, H P Cheng, X K Chu, G Cibinetto, H L Dai, J P Dai, A Dbeyssi, D Dedovich, Z Y Deng, A Denig, I Denysenko, M Destefanis, F De Mori, Y Ding, C Dong, J Dong, L Y Dong, M Y Dong, Z L Dou, S X Du, P F Duan, J Z Fan, J Fang, S S Fang, X Fang, Y Fang, R Farinelli, L Fava, S Fegan, F Feldbauer, G Felici, C Q Feng, E Fioravanti, M Fritsch, C D Fu, Q Gao, X L Gao, Y Gao, Z Gao, I Garzia, K Goetzen, L Gong, W X Gong, W Gradl, M Greco, M H Gu, Y T Gu, Y H Guan, A Q Guo, L B Guo, R P Guo, Y Guo, Y P Guo, Z Haddadi, A Hafner, S Han, X Q Hao, F A Harris, K L He, F H Heinsius, T Held, Y K Heng, T Holtmann, Z L Hou, C Hu, H M Hu, J F Hu, T Hu, Y Hu, G S Huang, J S Huang, X T Huang, X Z Huang, Y Huang, Z L Huang, T Hussain, W Ikegami Andersson, Q Ji, Q P Ji, X B Ji, X L Ji, L W Jiang, X S Jiang, X Y Jiang, J B Jiao, Z Jiao, D P Jin, S Jin, T Johansson, A Julin, N Kalantar-Nayestanaki, X L Kang, X S Kang, M Kavatsyuk, B C Ke, P Kiese, R Kliemt, B Kloss, O B Kolcu, B Kopf, M Kornicer, A Kupsc, W Kühn, J S Lange, M Lara, P Larin, H Leithoff, C Leng, C Li, Cheng Li, D M Li, F Li, F Y Li, G Li, H B Li, H J Li, J C Li, Jin Li, K Li, K Li, Lei Li, P L Li, P R Li, Q Y Li, T Li, W D Li, W G Li, X L Li, X N Li, X Q Li, Y B Li, Z B Li, H Liang, Y F Liang, Y T Liang, G R Liao, D X Lin, B Liu, B J Liu, C X Liu, D Liu, F H Liu, Fang Liu, Feng Liu, H B Liu, H H Liu, H H Liu, H M Liu, J Liu, J B Liu, J P Liu, J Y Liu, K Liu, K Y Liu, L D Liu, P L Liu, Q Liu, S B Liu, X Liu, Y B Liu, Y Y Liu, Z A Liu, Zhiqing Liu, H Loehner, Y F Long, X C Lou, H J Lu, J G Lu, Y Lu, Y P Lu, C L Luo, M X Luo, T Luo, X L Luo, X R Lyu, F C Ma, H L Ma, L L Ma, M M Ma, Q M Ma, T Ma, X N Ma, X Y Ma, Y M Ma, F E Maas, M Maggiora, Q A Malik, Y J Mao, Z P Mao, S Marcello, J G Messchendorp, G Mezzadri, J Min, T J Min, R E Mitchell, X H Mo, Y J Mo, C Morales Morales, N Yu Muchnoi, H Muramatsu, P Musiol, Y Nefedov, F Nerling, I B Nikolaev, Z Ning, S Nisar, S L Niu, X Y Niu, S L Olsen, Q Ouyang, S Pacetti, Y Pan, P Patteri, M Pelizaeus, H P Peng, K Peters, J Pettersson, J L Ping, R G Ping, R Poling, V Prasad, H R Qi, M Qi, S Qian, C F Qiao, L Q Qin, N Qin, X S Qin, Z H Qin, J F Qiu, K H Rashid, C F Redmer, M Ripka, G Rong, Ch Rosner, X D Ruan, A Sarantsev, M Savrié, C Schnier, K Schoenning, S Schumann, W Shan, M Shao, C P Shen, P X Shen, X Y Shen, H Y Sheng, M Shi, W M Song, X Y Song, S Sosio, S Spataro, G X Sun, J F Sun, S S Sun, X H Sun, Y J Sun, Y Z Sun, Z J Sun, Z T Sun, C J Tang, X Tang, I Tapan, E H Thorndike, M Tiemens, I Uman, G S Varner, B Wang, B L Wang, D Wang, D Y Wang, K Wang, L L Wang, L S Wang, M Wang, P Wang, P L Wang, W Wang, W P Wang, X F Wang, Y Wang, Y D Wang, Y F Wang, Y Q Wang, Z Wang, Z G Wang, Z H Wang, Z Y Wang, Z Y Wang, T Weber, D H Wei, P Weidenkaff, S P Wen, U Wiedner, M Wolke, L H Wu, L J Wu, Z Wu, L Xia, L G Xia, Y Xia, D Xiao, H Xiao, Z J Xiao, Y G Xie, Q L Xiu, G F Xu, J J Xu, L Xu, Q J Xu, Q N Xu, X P Xu, L Yan, W B Yan, W C Yan, Y H Yan, H J Yang, H X Yang, L Yang, Y X Yang, M Ye, M H Ye, J H Yin, Z Y You, B X Yu, C X Yu, J S Yu, C Z Yuan, W L Yuan, Y Yuan, A Yuncu, A A Zafar, A Zallo, Y Zeng, Z Zeng, B X Zhang, B Y Zhang, C Zhang, C C Zhang, D H Zhang, H H Zhang, H Y Zhang, J Zhang, J J Zhang, J L Zhang, J Q Zhang, J W Zhang, J Y Zhang, J Z Zhang, K Zhang, L Zhang, S Q Zhang, X Y Zhang, Y Zhang, Y Zhang, Y H Zhang, Y N Zhang, Y T Zhang, Yu Zhang, Z H Zhang, Z P Zhang, Z Y Zhang, G Zhao, J W Zhao, J Y Zhao, J Z Zhao, Lei Zhao, Ling Zhao, M G Zhao, Q Zhao, Q W Zhao, S J Zhao, T C Zhao, Y B Zhao, Z G Zhao, A Zhemchugov, B Zheng, J P Zheng, W J Zheng, Y H Zheng, B Zhong, L Zhou, X Zhou, X K Zhou, X R Zhou, X Y Zhou, K Zhu, K J Zhu, S Zhu, S H Zhu, X L Zhu, Y C Zhu, Y S Zhu, Z A Zhu, J Zhuang, L Zotti, B S Zou, J H Zou
Using 567  pb^{-1} of data collected with the BESIII detector at a center-of-mass energy of sqrt[s]=4.599  GeV, near the Λ_{c}^{+}Λ[over ¯]_{c}^{-} threshold, we study the singly Cabibbo-suppressed decays Λ_{c}^{+}→pπ^{+}π^{-} and Λ_{c}^{+}→pK^{+}K^{-}. By normalizing with respect to the Cabibbo-favored decay Λ_{c}^{+}→pK^{-}π^{+}, we obtain ratios of branching fractions: [B(Λ_{c}^{+}→pπ^{+}π^{-})/B(Λ_{c}^{+}→pK^{-}π^{+})]=(6.70±0.48±0.25)%, [B(Λ_{c}^{+}→pϕ)/B(Λ_{c}^{+}→pK^{-}π^{+})]=(1...
December 2, 2016: Physical Review Letters
https://www.readbyqxmd.com/read/27977572/three-dimensional-intracranial-eeg-monitoring-in-presurgical-assessment-of-mri-negative-frontal-lobe-epilepsy
#10
COMPARATIVE STUDY
Peng-Fan Yang, Ming-Chao Shang, Qiao Lin, Hui Xiao, Zhen Mei, Yan-Zeng Jia, Wei Liu, Zhong-Hui Zhong
Magnetic resonance imaging (MRI)-negative epilepsy is associated with poor clinical outcomes prognosis. The present study was aimed to assess whether intracranial 3D interictal and ictal electroencephalography (EEG) findings, a combination of EEG at a different depth, in addition to clinical, scalp EEG, and positron emission tomography-computed tomography (PETCT) data help to predict outcome in a series of patients with MRI-negative frontal lobe epilepsy (FLE) after surgery.Patients with MRI-negative FLE who were presurgically evaluated by 3D-intracranial EEG (3D-iEEG) recording were included...
December 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27973906/role-of-spin-dependent-terms-in-the-relationship-among-nuclear-spin-rotation-and-nmr-magnetic-shielding-tensors
#11
I Agustín Aucar, Sergio S Gomez, Claudia G Giribet, Gustavo A Aucar
The broadly accepted procedure to obtain the experimental absolute scale of NMR magnetic shieldings, σ, is well-known for nonheavy atom-containing molecules. It was uncovered more than 40 years ago by the works of Ramsey and Flygare. They found a quite accurate relationship among σ and the nuclear spin-rotation constants. Its relativistic extension was very recently proposed, although it has an intrinsic weakness because a new SO-S two-component term needs to be considered. We show how to overcome this problem...
December 15, 2016: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/27936204/serotypes-and-antimicrobial-resistance-in-salmonella-enterica-recovered-from-clinical-samples-from-cattle-and-swine-in-minnesota-2006-to-2015
#12
Samuel Hong, Albert Rovira, Peter Davies, Christina Ahlstrom, Petra Muellner, Aaron Rendahl, Karen Olsen, Jeff B Bender, Scott Wells, Andres Perez, Julio Alvarez
Salmonellosis remains one of the leading causes of foodborne disease worldwide despite preventive efforts at various stages of the food production chain. The emergence of multi-drug resistant (MDR) non-typhoidal Salmonella enterica represents an additional challenge for public health authorities. Food animals are considered a major reservoir and potential source of foodborne salmonellosis; thus, monitoring of Salmonella strains in livestock may help to detect emergence of new serotypes/MDR phenotypes and to gain a better understanding of Salmonella epidemiology...
2016: PloS One
https://www.readbyqxmd.com/read/27925666/enriching-s-4-u-rna-using-methane-thiosulfonate-mts-chemistry
#13
Erin E Duffy, Matthew D Simon
Metabolic labeling of cellular RNA is a useful approach to study RNA biology. 4-Thiouridine (s(4) U) is a convenient nucleoside for metabolic labeling because it is cell permeable and is incorporated into newly transcribed RNA, and the sulfur moiety provides a handle for biochemical purification. However, a critical step in the purification of s(4) U-RNA is the efficiency of the chemistry used to enrich s(4) U-RNA. Here, we present a protocol for s(4) U-RNA enrichment that includes efficient and reversible covalent chemistry to biotinylate s(4) U-RNA using the activated disulfide methane thiosulfonate conjugated to biotin (MTS-biotin), followed by enrichment on streptavidin beads...
December 7, 2016: Current Protocols in Chemical Biology
https://www.readbyqxmd.com/read/27914322/association-between-pigs-with-high-caecal-salmonella-loads-and-carcass-contamination
#14
M Pesciaroli, L Cucco, S De Luca, F R Massacci, C Maresca, L Medici, M Paniccià, E Scoccia, M Staffolani, G Pezzotti, C F Magistrali
Contaminated pork is a significant source of foodborne Salmonella infections. Pork is contaminated at the slaughterhouse; however, the mechanisms driving Salmonella contamination of carcasses are still poorly understood. The aim of this study was to investigate whether the amount of Salmonella carried by slaughtered pigs in their guts has an influence on carcass contamination. On that account, we tested whether the number of carcasses contaminated during a slaughter day was associated with the prevalence of highly contaminated pigs (HCP: Salmonella caecal loads ≥3log/g), or with the prevalence of pigs that simply carry Salmonella spp...
February 2, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/27909885/kinematics-and-muscle-activation-patterns-during-a-maximal-voluntary-rate-activity-in-healthy-elderly-and-young-adults
#15
Eva Chadnova, Nancy St-Onge, Richard Courtemanche, Robert D Kilgour
BACKGROUND: Maximal voluntary rate (MVR) performance tasks can provide important age-related information to the limiting factors associated with movement and the development of fatigue. AIM: To determine whether kinematic and muscle activation patterns during an MVR task differ between young and older adults. METHODS: We continuously measured frequency, amplitude, peak velocity, index of co-contraction and median frequencies of the index finger flexors and extensors during a 20-s MVR task in 10 young and 10 older subjects...
December 1, 2016: Aging Clinical and Experimental Research
https://www.readbyqxmd.com/read/27906285/highly-alignment-tolerant-and-high-sensitivity-100gb-s-4-%C3%A3-25gb-s-apd-rosa-with-a-thin-film-filter-based-de-multiplexer
#16
Joon Young Huh, Sae-Kyoung Kang, Jie Hyun Lee, Joon Ki Lee, SunMe Kim
We investigate and demonstrate a 100-Gb/s (4x25-Gb/s) receiver optical sub-assembly (ROSA) based on avalanche photodiodes and a thin-film filter-based de-multiplexer. The overall alignment tolerances of the ROSA are relaxed to have larger than ± 25 μm by improving optical coupling structure. The receiver sensitivity of each lane is also measured to be less than -22.2 dBm, a record minimum to our knowledge, at the bit error ratio of 10<sup>-12</sup> for 25.78-Gb/s NRZ signal.
November 28, 2016: Optics Express
https://www.readbyqxmd.com/read/27899354/collagenous-ultrastructure-of-the-discoid-meniscus-a-transmission-electron-microscopy-study
#17
Young-Hee Choi, Young-Jin Seo, Jong Mun Ha, Koo Hyun Jung, Jeehyoung Kim, Si Young Song
BACKGROUND: The collagen ultrastructure of the discoid lateral meniscus (DLM) has not been precisely defined. PURPOSE: To investigate the ultrastructure of the DLM, focusing on its collagen fibers, and to compare the collagen net architecture between intact and torn DLMs using the Collagen Meniscal Architecture (CMA) scoring system. STUDY DESIGN: Descriptive laboratory study. METHODS: Thirty specimens were taken from 30 patients with a diagnosis of a complete DLM using a 1-piece technique...
November 29, 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/27868416/-comparison-of-fibrotouch-and-acoustic-radiation-force-impulse-in-diagnosis-of-liver-fibrosis-in-patients-with-chronic-hepatitis-b
#18
Fang Liu, Lin Wei, Shanshan Wang, Bin Huang
Objective: To compare transient elastorgaphy (FibroTouch) and acoustic radiation force impulse (ARFI) in diagnosis of liver fibrosis in patients with chronic hepatitis B. Methods: One hundred and forty five patients with chronic hepatitis B underwent FibroTouch and ARFI examinations in Xixi Hospital of Hangzhou from January to November 2015. The liver stiffness (LSM) was detected by FibroTouch and the liver shear wave velocity (VTQ) was detected by ARFI; liver biopsy was performed in all patients. With biopsy results as gold standards, the diagnostic values of FibroTouch and ARFI for liver fibrosis were analyzed with Spearman correlation analysis and receiver operating characteristic (ROC) curve...
May 25, 2016: Zhejiang da Xue Xue Bao. Yi Xue Ban, Journal of Zhejiang University. Medical Sciences
https://www.readbyqxmd.com/read/27834576/medicare-advantage-issues-insights-and-implications-for-the-future
#19
Paul Cotton, Joseph P Newhouse, Kevin G Volpp, A Mark Fendrick, Susan Lynne Oesterle, Pat Oungpasuk, Ruchi Aggarwal, Gail Wilensky, Kathleen Sebelius
Medicare Advantage: Issues, Insights, and Implications for the Future Paul Cotton, Joseph P. Newhouse, PhD, Kevin G. Volpp, MD, PhD, A. Mark Fendrick, MD, Susan Lynne Oesterle, Pat Oungpasuk, Ruchi Aggarwal, Gail Wilensky, PhD, and Kathleen Sebelius Editorial    S-2 D.B. Nash, and A.Y. Schwartz The History, Impact, and Future of the Medicare Advantage Star Ratings System    S-3 P. Cotton Medicare Advantage and Traditional Fee-For-Service Medicare    S-4 J.P. Newhouse Behavioral Economics: Key to Effective Care Management Programs for Patients, Payers, and Providers    S-5 K...
November 2016: Population Health Management
https://www.readbyqxmd.com/read/27827494/solvent-induced-structural-diversity-in-tetranuclear-ni-ii-schiff-base-complexes-the-first-ni4-single-molecule-magnet-with-a-defective-dicubane-like-topology
#20
Radovan Herchel, Ivan Nemec, Marek Machata, Zdeněk Trávníček
Two tetranuclear Ni(II) complexes, namely [Ni4(L)4(CH3OH)3(H2O)]·CH3OH (1) and (Pr3NH)2[Ni4(L)4(CH3COO)2] (2, Pr3N = tripropylamine), were synthesized from a tridentate Schiff base ligand H2L (2-[(E)-(2-hydroxybenzylidene)amino]phenol) and Ni(CH3COO)2·4H2O, using different solvents and their ratios (CH3OH and/or CH2Cl2). The prepared Ni4 complexes are of different structural types, involving an Ni4O4 cubane-like core (1) and Ni4O6 defective dicubane-like core (2), with all the Ni atoms hexacoordinated. The complexes were characterized by elemental analysis, FT-IR spectroscopy, variable temperature and field magnetic measurements, and single crystal X-ray analysis...
November 9, 2016: Dalton Transactions: An International Journal of Inorganic Chemistry
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