Gregory L. Hillhouse

Gregory Lee Hillhouse
Born	( 1955 -03-01)March 1, 1955 Greenville, South Carolina
Died	March 6, 2014(2014-03-06) (aged 59) Chicago, Illinois
Alma mater	University of South Carolina B.S. 1976 Indiana University Bloomington Ph.D. 1980
Scientific career
Institutions	California Institute of Technology, University of Chicago
Thesis	Reactions of tungsten complexes with molecules containing nitrogen-nitrogen bonds (1980)
Doctoral advisor	Barry L. Haymore
Other academic advisors	Edward E. Mercer, Derek J. Hodgson, John E. Bercaw
Notable students	Jonas C. Peters

Gregory Lee Hillhouse (March 1, 1955 – March 6, 2014) was an inorganic chemist with a long-standing interest in the chemistry of organotransition metal compounds at the University of Chicago. Much of his work focused on creating organometallic compounds to stabilize and isolate reactive intermediates, molecules that are proposed to exist briefly during a larger catalytic reaction progress.

Biography

Hillhouse was born on March 1, 1955, in Greenville, South Carolina. He attended the University of South Carolina in 1976 and received his Ph.D. from Indiana University Bloomington in 1980. He then became a postdoctoral research associate at California Institute of Technology, before taking a position in the department of chemistry at the University of Chicago in 1983.

He died from cancer at his home in Chicago on March 6, 2014, aged 59.

Research

Representative Ni(II) complexes isolated in the Hillhouse laboratory.

Organometallic nickel complexes

While the early work of Hillhouse focused on early-transition metal chemistry, his later career efforts were dedicated towards base metals. For example, in 2001 Hillhouse and co-workers synthesized a complex that refuted the notion that it was impossible for late transition metals like nickel to form multiple bonds with heteroatoms. The result was a molecule that he affectionately referred to as “Double Nickel,” which possessed an indisputable nickel-nitrogen double bond. Later the group published a study showcasing that one can also synthesize and isolated an electronically similar phosphinidine species. Additionally, using bulky N-heterocyclic carbene (NHC) ligands, Hillhouse and co-workers showed that one can stabilize a linear two-coordinate Ni-based imido species. His group has also showcased how some of these and similar complexes can undergo redox chemistry forming Ni(I) and Ni(III) species.

Personal life

Hillhouse was gay, although he did not come out openly in his professional career until later in his life. In his career as a teacher and mentor, he served as a role model for younger LGBTQ+ chemists.