Marilyn Olmstead

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Marilyn Olmstead was an American chemist, an expert in small molecule crystallography and an international leader in the crystallographic study of fullerenes, or "Buckyballs." She held the position of professor emerita of chemistry at the University of California Davis. [1] [2] [3]

Contents

She was elected as a Fellow of the American Chemical Society in 2014 [4] [5] [6] and the American Crystallographic Association in 2017. [7]

Early life

Marilyn Olmstead was born on December 8, 1943, in Glendale, California. [3] and graduated from Burbank High School in 1961.

Higher education

Olmstead earned a B.A. in chemistry from Reed College in 1965. She attended University of Wisconsin-Madison for her graduate studies, supported by a Woodrow Wilson Fellowship. She received her Ph.D. in chemistry from Wisconsin-Madison in 1969, the only woman in her graduating class of 40 students. [1]

Career and discoveries

Olmstead started at the Department of Chemistry of the University of California, Davis in 1969 as lecturer in chemistry (1969-1975) She wa subsequently appointed postdoctoral fellow (1971–1986), staff research associate (X-ray crystallography) (1986–1997), and specialist (1997–2003). By 2000, she was the in charge of a crystallographic laboratory that was one of the most productive in the world; she herself had the highest number of publications and cites of anyone in the chemistry department. Eventually, in 2003, when Marilyn was 60 years old, she was appointed to the faculty as full professor. She became a faculty member at the rank of professor Step 2 in 2003, and advanced through the system to professor, Step 6 in 2015. She became emerita in 2015. [3]

Olmstead was a specialist in small-molecule crystallography. A focus of her research after 1990 was the structural characterization by X-ray crystallography of fullerenes, both empty and filled (endohedrals) cages, in collaboration with Alan Balch. She contributed to many of the papers that described previously undetected higher fullerenes (larger than C70) [8] (until 2018 when this record was broken [9] ) and endohedral fullerenes (those that contain encaged metals and small clusters). [10] [11] [12] She pushed boundaries of crystallography, employing synchrotron radiation and ultra-low temperature data collection. Complementing her work on fullerenes and carbon nonocapsules, she also collaborated with petroleum scientists to provide definitive structural characterization of a number of the large family of diamondoid hydrocarbons found in oil wells. [13] Structure of [123]tetramantane, a new type of σ-helical structure based on a diamondoid (nanodiamond) framework, [14] and the structure of the first fullerene that did not obey the Isolated pentagon rule. [15] She was also responsible for the structural characterization of the first boron-centered radical. [16]

Olmstead served as an original co-editor of the journal Acta Crystallographica Section E from 2001 to 2011. She served in the elected positions of chair of the General Interest Group, and chair of the Continuing Education Committee in the American Crystallographic Association. She was a member of the Journal’s Commission of the International Union of Crystallography. She was an elected member of the U.S. National Committee on Crystallography, a branch of the National Academy of Sciences.

In 2014 Olmstead was elected a Fellow of the American Chemical Society. [4] [5] [6] In 2017, she was elected a Fellow of the American Crystallographic Association. [7]

Death

Marilyn Olmstead was killed on September 30, 2020, in a collision while cycling on a rural road north of Davis, California. [17]

Related Research Articles

<span class="mw-page-title-main">Fullerene chemistry</span>

Fullerene chemistry is a field of organic chemistry devoted to the chemical properties of fullerenes. Research in this field is driven by the need to functionalize fullerenes and tune their properties. For example, fullerene is notoriously insoluble and adding a suitable group can enhance solubility. By adding a polymerizable group, a fullerene polymer can be obtained. Functionalized fullerenes are divided into two classes: exohedral fullerenes with substituents outside the cage and endohedral fullerenes with trapped molecules inside the cage.

<span class="mw-page-title-main">Fluoronium</span> Ion

The fluoronium ion is an inorganic cation with the chemical formula H
2
F+
. It is one of the cations found in fluoroantimonic acid. The structure of the salt with the Sb
2
F
11
anion, has been determined. The fluoronium ion is isoelectronic with the water molecule and the azanide ion.

Dialkylbiaryl phosphine ligands are phosphine ligands that are used in homogeneous catalysis. They have proved useful in Buchwald-Hartwig amination and etherification reactions as well as Negishi cross-coupling, Suzuki-Miyaura cross-coupling, and related reactions. In addition to these Pd-based processes, their use has also been extended to transformations catalyzed by nickel, gold, silver, copper, rhodium, and ruthenium, among other transition metals.

<span class="mw-page-title-main">Borylene</span>

A borylene is the boron analogue of a carbene. The general structure is R-B: with R an organic moiety and B a boron atom with two unshared electrons. Borylenes are of academic interest in organoboron chemistry. A singlet ground state is predominant with boron having two vacant sp2 orbitals and one doubly occupied one. With just one additional substituent the boron is more electron deficient than the carbon atom in a carbene. For this reason stable borylenes are more uncommon than stable carbenes. Some borylenes such as boron monofluoride (BF) and boron monohydride (BH) the parent compound also known simply as borylene, have been detected in microwave spectroscopy and may exist in stars. Other borylenes exist as reactive intermediates and can only be inferred by chemical trapping.

<span class="mw-page-title-main">Cycloparaphenylene</span>

A cycloparaphenylene is a molecule that consists of several benzene rings connected by covalent bonds in the para positions to form a hoop- or necklace-like structure. Its chemical formula is [C6H4]n or C
6n
H
4n
Such a molecule is usually denoted [n]CPP where n is the number of benzene rings.

Karl Wieghardt is a German inorganic chemist and emeritus director of the Max Planck Institute for Chemical Energy Conversion in Mülheim. He was active in the preparation and detailed characterization of models for iron and manganese metalloenzymes, metal complexes of noninnocent ligands, and magnetic interactions in polynuclear metal complexes.

Corinna S. Schindler is a Professor of Chemistry at the University of Michigan. She develops catalytic reactions with environmentally benign metals such as iron, towards the synthesis of biologically active small molecules. For her research in the development of new catalysts, Schindler has been honored with several early-career researcher awards including the David and Lucile Packard Foundation Fellowship in 2016, the Alfred P. Sloan Fellowship in 2017, and being named a member of the C&EN Talented 12 in 2017. Schindler has served on the Editorial Board of Organic and Bimolecular Chemistry since 2018.

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The borosulfates are heteropoly anion compounds which have sulfate groups attached to boron atoms. Other possible terms are sulfatoborates or boron-sulfur oxides. The ratio of sulfate to borate reflects the degree of condensation. With [B(SO4)4]5- there is no condensation, each ion stands alone. In [B(SO4)3]3- the anions are linked into a chain, a chain of loops, or as [B2(SO4)6]6− in a cycle. Finally in [B(SO4)2] the sulfate and borate tetrahedra are all linked into a two or three-dimensional network. These arrangements of oxygen around boron and sulfur can have forms resembling silicates. The first borosulfate to be discovered was K5[B(SO4)4] in 2012. Over 75 unique compounds are known.

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References

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  2. "Obituary: Marilyn Olmstead". cen.acs.org. Retrieved 2021-08-14.
  3. 1 2 3 "Remembering Professor Marilyn Olmstead". UC Davis Chemistry. 2020-10-08. Retrieved 2021-08-14.
  4. 1 2 "2014 ACS Fellows". cen.acs.org. Retrieved 2021-08-14.
  5. 1 2 "Three Alumni Named 2014 ACS Fellows". Department of Chemistry. 2014-07-22. Retrieved 2021-08-14.
  6. 1 2 "Women From Higher Education Named Fellows of American Chemical Society". Women In Academia Report. 2014-08-06. Retrieved 2021-08-14.
  7. 1 2 "Fellows of the American Crystallographic Association". www.amercrystalassn.org. Retrieved 2021-08-14.
  8. Mercado, Brandon Q.; Jiang, An; Yang, Hua; Wang, Zhimin; Jin, Hongxiao; Liu, Ziyang; Olmstead, Marilyn M.; Balch, Alan L. (2009). "Isolation and Structural Characterization of the Molecular Nanocapsule Sm2@D3d(822)-C104". Angewandte Chemie International Edition. 48 (48): 9114–9116. doi:10.1002/anie.200904662. ISSN   1521-3773.
  9. Pan, Changwang; Bao, Lipiao; Yu, Xianyong; Fang, Hongyun; Xie, Yunpeng; Akasaka, Takeshi; Lu, Xing (2018-02-27). "Facile Access to Y2C2n (2n = 92–130) and Crystallographic Characterization of Y2C2@C1(1660)-C108: A Giant Nanocapsule with a Linear Carbide Cluster". ACS Nano. 12 (2): 2065–2069. doi:10.1021/acsnano.8b00384. ISSN   1936-0851. PMID   29400943.
  10. Mercado, Brandon Q.; Olmstead, Marilyn M.; Beavers, Christine M.; Easterling, Michael L.; Stevenson, Steven; Mackey, Mary A.; Coumbe, Curtis E.; Phillips, Joshua D.; Phillips, J. Paige; Poblet, Josep M.; Balch, Alan L. (2009-12-15). "A seven atom cluster in a carbon cage, the crystallographically determined structure of Sc4(μ3-O)3@Ih-C80". Chemical Communications. 46 (2): 279–281. doi:10.1039/B918731F. ISSN   1364-548X.
  11. Zhang, Yang; Ghiassi, Kamran B.; Deng, Qingming; Samoylova, Nataliya A.; Olmstead, Marilyn M.; Balch, Alan L.; Popov, Alexey A. (2015). "Synthesis and Structure of LaSc2N@Cs(hept)-C80 with One Heptagon and Thirteen Pentagons". Angewandte Chemie International Edition. 54 (2): 495–499. doi:10.1002/anie.201409094. ISSN   1521-3773. PMID   25413484.
  12. Dahl, Jeremy E. P.; Moldowan, J. Michael; Peakman, Torren M.; Clardy, Jon C.; Lobkovsky, Emil; Olmstead, Marilyn M.; May, Paul W.; Davis, Tim J.; Steeds, John W.; Peters, Ken E.; Pepper, Andy (2003). "Isolation and Structural Proof of the Large Diamond Molecule, Cyclohexamantane (C26H30)". Angewandte Chemie International Edition. 42 (18): 2040–2044. doi:10.1002/anie.200250794. ISSN   1521-3773.
  13. Stevenson, S.; Rice, G.; Glass, T.; Harich, K.; Cromer, F.; Jordan, M. R.; Craft, J.; Hadju, E.; Bible, R.; Olmstead, M. M.; Maitra, K. (1999). "Small-bandgap endohedral metallofullerenes in high yield and purity". Nature. 401 (6748): 55–57. doi:10.1038/43415. ISSN   1476-4687. S2CID   4340875.
  14. Schreiner, Peter R.; Fokin, Andrey A.; Reisenauer, Hans Peter; Tkachenko, Boryslav A.; Vass, Elemér; Olmstead, Marilyn M.; Bläser, Dieter; Boese, Roland; Dahl, Jeremy E. P.; Carlson, Robert M. K. (2009-08-19). "[123]Tetramantane: Parent of a New Family of σ-Helicenes". Journal of the American Chemical Society. 131 (32): 11292–11293. doi:10.1021/ja904527g. ISSN   0002-7863. PMID   19722641.
  15. Olmstead, Marilyn M.; Lee, Hon Man; Duchamp, James C.; Stevenson, Steven; Marciu, Daniela; Dorn, Harry C.; Balch, Alan L. (2003). "Sc3N@C68: Folded Pentalene Coordination in an Endohedral Fullerene that Does Not Obey the Isolated Pentagon Rule". Angewandte Chemie International Edition. 42 (8): 900–903. doi:10.1002/anie.200390237. ISSN   1521-3773. PMID   12596171.
  16. Olmstead, Marilyn M.; Power, Philip P. (1986-07-01). "First structural characterization of a boron-centered radical: x-ray crystal structure of [Li(12-crown-4)2]+ [BMes3]-.bul". Journal of the American Chemical Society. 108 (14): 4235–4236. doi:10.1021/ja00274a071. ISSN   0002-7863.
  17. "Retired UCD chem professor killed while cycling on rural road". Davis Enterprise. 2020-10-01. Retrieved 2021-08-14.