Our interests are very broad and range from very basic studies to
applied research of academic, Government or industrial interest. We are
particularly interested in high energy density materials (HEDM),
inorganic main group chemistry, polynitrogen and nitroamine chemistry,
high-oxygen carriers, energetic ionic liquids, chemistry at the limits
of oxidation and coordination, and the synthesis and characterization of
novel carbocation and fluorocarbon compounds. Our work exploits the
synergism of theory and synthesis and greatly benefits from close
collaborations with numerous groups of theoreticians. The main goal of
our research is to advance the state of the art and strive for
spectacular breakthroughs, rather than settling for small incremental
Typical examples of breakthrough achievements, achieved by
us in the past, include the first syntheses of novel cations, such as
NF4+  or ClF6+ ,
which are derived from non-existing parent
molecules, the first chemical synthesis of elemental fluorine  which
according to the textbooks was impossible, the synthesis of XeF5-
IF52-  which constitute the first examples of
pentagonal planar AX5
species, the development of a synthesis for truly anhydrous soluble
"naked" fluoride ion  which has led to a renaissance in high
coordination number chemistry , the synthesis of N5+  which is the
only stable polynitrogen species in more than 100 years and only the
second known man-made polynitrogen ion that can be prepared on a
macroscopic scale, the spectroscopic identification of the cyclic N5-
anion , the synthesis of the first oxygen-balanced energetic ionic
liquids for liquid monopropellant applications , the preparation and
characterization of over 40 new polyazides  and their combination
with energetic counter-ions as for example in [N5]+[B(N3)4)]- , the
synthesis of NO2)CN, a stable ultra-high energy-density compound  and
FN(NO2))2) , the bulk synthesis of the CF3)- anion , and the
developments of the first quantitative scales for oxidizer strengths
 and Lewis acidities .
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- "The Tetrafluoronitronium (V) Cation, NF4+," K. O. Christe, J.P. Guertin, and A.E. Pavlath, Inorg. Nucl. Chem. Letters, 2, 83 (1966).
- "The Hexafluorochlorine (VII) Cation, ClF6+," K. O. Christe, Inorg. Nucl. Chem. Letters, 8, 741 (1972).
- "Chemical Synthesis of Elemental Fluorine," K. O. Christe, Inorg. Chem., 25, 3721 (1986).
- ((a) "The Pentafluoroxenate (IV) Anion, XeF5-; the First Example of a Pentagonal Planar AX5 Species," K. O. Christe, E. C. Curtis, H.P. Mercier, J. C. P. Sanders, G. J. Schrobilgen, and D. Dixon, J. Am. Chem. Soc., 113, 3351 (1991); (b) "Pentagonal Planar AX5 Species: Synthesis and Characterization of the Iodine (III) Pentafluoride Dianion, IF52-," K. O. Christe, W.W. Wilson, G.W. Drake, D.A. Dixon, J.A. Boatz, and R. Z. Gnann, J. Am. Chem. Soc., 120, 4711 (1998).
- "Syntheses, Properties, and Structures of Anhydrous Tetramethylammonium Fluoride and its 1:1 Adduct with trans-3-Amino-2-Butene Nitrile," K. O. Christe, W. W. Wilson, R. D. Wilson, R. Bau, and J. Feng, J. Am. Chem. Soc., 112, 7619 (1990).
- "Heptacoordinated Main-Group Fluorides and Oxyfluorides," K. O. Christe, E.C. Curtis, D.A. Dixon, H.P.A. Mercier, J.C.P. Sanders, G.J. Schrobilgen, and W.W. Wilson, Chapter 5 in "Inorganic Fluorine Chemistry Toward the 21st Century" ACS Symposium Series 555 (1994).
- "N5+: A Novel Homoleptic Polynitrogen Ion as a High Energy Density Material," K. O. Christe, W. W. Wilson, J. A. Sheehy, and J. A. Boatz, Angew. Chem. Int. Ed., 38, 2004 (1999).
- "Experimental Detection of the Pentaazacyclopentadienide (Pentazolate) Anion, cyclo-N5-," A. Vij, J. G. Pavlovich, W. Wilson, V. Vij, and K. O. Christe, Angew. Chem. Int. Ed., 41, 3051 (2002).
- "Oxygen Balanced Energetic Ionic Liquid," C. J. Bigler Jones, R. Haiges, T. Schroer, and K. O. Christe. Angew. Chem. Int. Ed., 45, 4981 (2006).
- "Preparation of the First Manganese(III) and Manganese(IV) Azides," R. Haiges, R. J. Buszek, J. A. Boatz, and K. O. Christe, Angew. Chem. Int. Ed., 53, 8200 (2014), and references cited therein.
- "New High Energy Density Materials. Synthesis and Characterization of
N5+SO3F-," R. Haiges, S. Schneider, T. Schroer, and K. O. Christe, Angew. Chem. Int. Ed., 43, 4919 (2004).
- "Nitryl Cyanide, NCNO2," M. Rahm, G. Belanger-Chabot, R. Haiges, and K. O. Christe, Angew. Chem. Int. Ed., 53, 6893 (2014).
- "Synthesis and Characterization of Fluorodinitroamine, FN(NO2)2," K. O. Christe, W. W. Wilson, G. Belanger-Chabot, R. Haiges, J. A. Boatz, M. Rahm, G. K. Surya Prakash, T. Saal, and M. Hopfinger, Angew. Chem. Int. Ed., 53, published on line (2014).
- "Long-Lived Trifluoromethanide Anion: A Key Intermediate in Nucleophilic Trifluoromethylations," G. K. Surya Prakash, F. Wang, Z. Zhang, R. Haiges, M. Rahm, K. O. Christe, T. Mathew, and G. A. Olah, Angew. Chem. Int. Ed., 53, 11575 (2014).
- "A Quantitative Scale for the Oxidizing Strength of Oxidative Fluorinators," K. O. Christe, and D. A. Dixon, J. Am. Chem. Soc., 114, 2978 (1992).
- "On a quantitative scale for Lewis acidity and recent progress in polynitrogen chemistry," K. O. Christe, D. A. Dixon, D. McLemore, W. W. Wilson, J. A. Sheehy, J. A. Boatz, J. Fluorine Chem., 101, 151 (2000).