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PubMed2000

Experimental Charge Densities of Semiconducting Cage Structures Containing Alkaline Earth Guest Atoms Work at the X10c beamline at NSLS was supported by the Division of Materials Sciences of the US Department of Energy (DE-AC02-98CH10886). B.B.I. and A.E.C.P. gratefully acknowledge support from the Danish and Swedish Research Councils (SNF, TFR, STINT). This work was partially supported by the Office of Naval Research (G.D.S., J.D.B., S.L., A.E.C.P.), and it made use of MRL Central Facilities supported by the National Science Foundation under Award No. DMR96-32716. Dr. R. L. Paul of NIST is thanked for the Cold Neutron Prompt Gamma Ray Activation Analysis.

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PubMed2000

Spin Frustration in a Dimeric Mn(II) Complex with a Metallocene-Substituted alpha-Nitronyl Nitroxide Radical This work was supported by grants from DGES (project PB96-0802-C02-01), CIRIT (project SGR 96-00106), Fonds zur Förderung der Wissenschaftlichen Forschung, Vienna (Project P 13128), Austrian Federal Ministry of Science (BMWV), Acción Integrada Hispano-Austríaca (HU-1999-0015), and the 3MD Network of the TMR program of the E.U. (contract ERBFMRX CT980181). C.S. thanks the Austrian Federal Ministry of Science for the award of a research scholarship. D.R.-M. thanks the Generalitat de Catalunya for a postdoctoral grant. The authors acknowledge the suggestions given by one of the referees.

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PubMed2000

Structural, Electrochemical, and Photophysical Properties of Gallium(III) 5,10,15-Tris(pentafluorophenyl)corrole We acknowledge support of this research from the Fund for the Promotion of Research at the Technion (Z.G.), the National Science Foundation (H.B.G.), and the Danish Natural Science Research Council for financial support under grant No. 9800549 (J.B.). We also thank Dr. H. Weihe (University of Copenhagen) for access to computing facilities, and L. M. Henling (Beckman Institute) for assistance with the crystal structure determination.

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PubMed2000

Total Synthesis of (+)-Eurylene and (+)-14-Deacetyleurylene We thank K. Ujihara (Sumitomo Chemical Co.) for generously supplying an authentic sample and a copy of the (1)H NMR spectrum of synthetic eurylene. We are grateful to Prof. H. Iio and Dr. Y. Usuki (Osaka City University) for the HPLC purification. T.I. thanks the Japan Society for the Promotion of Science for providing a JSPS Research Fellowship for Young Scientists. This research was supported by the Naito Foundation, the Fujisawa Pharmaceutical Award in Synthetic Organic Chemistry, Japan, the SUNBOR GRANT from the Suntory Institute for Bioorganic Research, and a Grant-in Aid for Encouragement of JSPS Research Fellows from the Japan Society for the Promotion of Science.

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PubMed2000

The Essential Role of a Zn(II) Ion in the Disproportionation of Semiquinone Radical Anion by an Imidazolate-Bridged Cu(II)-Zn(II) Model of Superoxide Dismutase We are grateful to Mituo Ohama, Graduate School of Science, Osaka University, for recording resonance Raman spectra. This work was partially supported by a Grant-in-Aid for Scientific Research Priority Area (No. 11228205) from the Ministry of Education, Science, Sports and Culture, Japan.

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PubMed2001

Synthesis of the First (1-3:6,7-eta-Cyclodecadienyl)ruthenium Complex by the Intramolecular Reaction of an Alkene and a Vinylcyclopropane We thank the National Science Foundation and the National Institutes of Health (NIH), General Medical Sciences, for their generous support of our programs. We are grateful to A. Cole for solving the X-ray structure of 3. Mass spectra were provided by the Mass Spectrometry Facility of the University of California, San Francisco, supported by the NIH Division of Research Resources.

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PubMed2001

An Asymmetric Synthesis of C-2-epi-Hygromycin A We thank the National Science Foundation and the National Institute of Health, General Medical Sciences, for their generous support of our programs. O.D. thanks the Association pour la Recherche contre le Cancer (ARC) for a postdoctoral fellowship. Mass spectra were kindly provided by the Mass Spectrometry Facility, University of San Francisco, supported by the NIH Division of Research Resources.

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PubMed2001

Synthesis of Highly Magnetic, Air-Stable Iron-Iron Carbide Nanocrystalline Particles by Using Power Ultrasound A. Gedanken is grateful for the support of the German Ministry of Science through the Deutsche-Israeli DIP program. I. Felner and A. Gedanken thank also the Israeli Ministery of Science, Culture and Sport for an infrastructure grant. S. I. Nikitenko thanks the Bar-Ilan Research Authority for his fellowship. The authors also thank Dr. Shifra Hochberg for editorial assistance.

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PubMed2001

Synthesis of Fluorogypsetin and Fluorobrevianamide E by a Novel Fluorination-Cyclization of cyclo-L-Trp-L-AAs This work was supported by a Grant-in-Aid for Scientific Research from the Ministry of Education, Science, Sports and Culture, Japan. N.S. wishes to thank the Novartis Foundation (Japan) for the Promotion of Science for support. We thank Prof. Yoshio Takeuchi very much for generously sharing his facilities, for very kind encouragement and for giving us the opportunity to study in the field of fluorine chemistry. We also thank F-TECH INC. for a gift of FP-T300.

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