the ethical purpose of education walt whitman
TRANSCRIPT
The Ethical Purpose of Education
Walt Whitman
Triassic Fossils
My 4 out of 5 Rule
CH3CP
At Sussex we created many new molecules and studied them by microwave spectroscopy and photoelectron spectroscopy
Phosphorus compounds with John Nixon - Polyynes with David Walton
H2C=PH
CH3CH=S
HCCCCCN
CH3B=S FB=S
FCP
F2C=S H2C=C=S
HCC CCCCCN
(CH3)2CH=SC=S
F2C=PH H2C=PCl H2C=PF
HCP C6H5CP
The first carbon phosphorus double C=P bonded species – phosphaalkenes
General method for creating carbon phosphorus triple bonded species – phosphaalkynes – only HCP previously known (for more than a decade)
General thermolytic routes to new unstable species - thiocarbonyls
ClB=S BrB=S
General method for creating Boron –Sulphides
General method for creating cyanopolyynes
NC–CPClCP HCC–CP
H2C=CH-C=PH
HCC–CC–CP
H−C≡C−C≡C−C≡N
Walton Polyyne Synthesis
Radioastronomy
Rotating dipolar molecule → a photon that can be detected by a radio telescope
HCCCCCN
Hintenberger Franzen and
Schuy
Z Nat 1963
Mass spectrum of arc
discharged graphite
C60 VS
Half Price Books
Resonant 2-photon ionisation (R2PI) spectroscopy
Si
C C
Ap2
Graphite Target
Should produce long carbon chains
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The Idea
?
C60
C60 VS
My 4 out of 5 Rule
©
The Pentagon Isolation Rule (PIR)
Ferrocene image at: www.cscs.ch/.../representations/index.html
Fe
image at: commons.wikimedia.org/wiki/File:Endohedral_fu...
C28 s Sussex NNC
©If C60 is a closed cage…
I had a hole drilled though the base plate and filled it with Argon
Sussex NNC
Sussex NNC
We deposited soot from the carbon arc on an electron microscope slide and varied the
Argon pressure
Sussex NNC
Electron microscopy indicated that the structure of the deposited soot changed
dramatically as the pressure was raised to over 80 microns
A manuscript of a paper presented at a conference in Capri sent to me by
Mike Jura a professor of astrophysics at UCLA
Infra red spectrum of arc discharged soot!
The Red Solution
©
3Then there were
Fullerene Chemistry©
The Buckyball bounces!
C60 Bouncing
©Just How Small is a Buckyball
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m/z1,000950900850800750
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Fullerene Growth
…in Outer Space
The Third Man
C60
C70
Detection of C60 and C70 in a Young Planetary NebulaJ Cami, J Bernard-Salas,E Peeters and S E Malek
July 2010
Diamond
Graphite
and…
C60
Movie- “The Third Man”
BBC Horizon TV Programme 1992
©
Problem
25th March
Draw the C60 molecule and comment on why you drew it the way you did