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SUMMARY:Studies Of Magnetism And Metal-Metal Bonding In Hexagonal Perovskit
 es
LOCATION:Chemistry A101
TZID:America/Denver
DTSTART:20250228T160000
UID:2026-04-24-10-09-36@natsci.colostate.edu
DTSTAMP:20260424T100936
Description:About the Seminar:\n\nHexagonal perovskites share the ABX3 stoi
 chiometry and cation coordination environments of the more widely studied 
 “cubic” perovskite family\, but unlike their cubic counterparts\, hexa
 gonal perovskites feature face-sharing linkages between metal-centered oct
 ahedra.  When transition-metal ions occupy these sites there can be suffi
 cient overlap of d-orbitals on neighboring metals to form metal-metal bond
 s.  In this talk I will discuss the structure\, bonding and magnetism of 
 hexagonal perovskites featuring M2X9n− and M3X12m− clusters of face sh
 aring octahedra. Broadly speaking the compounds discussed can be divided i
 nto three categories (1) those where clusters containing magnetic transiti
 on metal ions are isolated from each other by octahedra containing diamagn
 etic cations like Mo(VI)\, W(VI) and Sb(V)\, (2) those where the clusters 
 are linked by octahedral containing magnetic cations like Re(VI)\, and (3)
  those where the clusters are connected directly. Representative examples 
 will be discussed that are of interest as ferrimagnets\, antiferromagnets\
 , quantum spin liquids\, and altermagnets.\n\nAbout the Speaker:\n\nPatric
 k Woodward received BS degrees in Chemistry and General Engineering from I
 daho State University in 1991\, an MS in Materials Science and a PhD in Ch
 emistry from Oregon State University in 1996\, where he studied under Prof
 essor Arthur Sleight.  He was a postdoc in the Physics Department at Broo
 khaven National Laboratory (1996−1998) before joining the faculty at Ohi
 o State University in 1998\, where he is currently the Newman Professor of
  Chemistry and Biochemistry.  He has served as an Associate Editor of the
  Journal of Solid State Chemistry (2006-2011)\, Vice President of the Neut
 ron Scattering Society of American (2014-2018). He organized the 2009 Nort
 h American Solid State Chemistry Conference and served as chair of the 201
 8 Gordon Research Conference on Solid State Chemistry. He has been recogni
 zed as an NSF Career Fellow (2001)\, an Alfred P. Sloan Fellow (2004)\, a 
 Fellow of the American Chemical Society (2020.  He is co-author of two w
 idely used textbooks\, Chemistry: The Central Science and Solid State Mate
 rials Chemistry. 4:00 pm
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