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General thermolytic routes to new unstable species - thiocarbonyls

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Presentation on theme: "General thermolytic routes to new unstable species - thiocarbonyls"— Presentation transcript:

1 General thermolytic routes to new unstable species - thiocarbonyls
C=S CH3CH=S F2C=S H2C=C=S (CH3)2CH=S The first carbon phosphorus double C=P bonded species – phosphaalkenes H2C=PH F2C=PH H2C=PCl H2C=PF H2C=CH-C=PH General method for creating carbon phosphorus triple bonded species – phosphaalkynes – only HCP previously known (for more than a decade) CH3CP HCP FCP ClCP C6H5CP NC–CP HCC–CP General method for creating Boron –Sulphides HCC–CC–CP CH3B=S FB=S ClB=S BrB=S General method for creating cyanopolyynes HCCCCCN HCC CCCCCN 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

2 Spectra Interstellar Molecules
Harry Kroto 2004

3 Walton Polyyne Synthesis
H−C≡C−C≡C−C≡N Walton Polyyne Synthesis

4 Radioastronomy Survey

5 HCCCCCN Rotating dipolar molecule → a photon that can be detected by a radio telescope

6 Radioastronomy

7 CCCCCCCCCCCCCCCCCCCCCCCCCC
Harry Kroto 2004

8 H−C≡C−C≡C−C≡N Synthesis Polyyne Synthesis Harry Kroto 2004

9 H−C≡C−C≡C−C≡N HC5N Harry Kroto 2004

10 SgrB2

11 Harry Kroto 2004

12 Oka

13 Harry Kroto 2004

14 Harry Kroto 2004

15 H−C≡C−C≡C−C≡C−C≡N HC7N Harry Kroto 2004

16 HC7N Radiastronomy Harry Kroto 2004

17 HC7N Media Hype Harry Kroto 2004

18 Harry Kroto 2004

19 Harry Kroto 2004

20 Oka,Avery,Broten,McLeod(NRC);Alexander,Kirby,Walton(Sussex)
HCCCCCN HCCCCCCCN HCCCCCCCCN Oka,Avery,Broten,McLeod(NRC);Alexander,Kirby,Walton(Sussex) Harry Kroto 2004

21 TMC Harry Kroto 2004

22 IRC 10216

23 Bill Klemperer www.vega.org.uk

24 Total energy must be conserved and in a plant at snooker or billiards the blue ball takes away the energy and the white and red can thus remain in contact after collision

25 H...H 3 Body Collision Harry Kroto 2004

26 Reaction Coordinate - Energy
Products C A + B Reaction Coordinate - Energy Harry Kroto 2004

27 Grain Surface Reactions
Harry Kroto 2004

28 Ion Molecule Reactions – H2O
c.r O H H H e- He  He+  O+  OH+  OH2+  OH3+  OH2 +e He H H H H Ion Molecule Reactions – H2O Harry Kroto 2004

29 H2 H2  H  H3+ + e H

30 Orion Nebula Birth Harry Kroto 2004

31 The long carbon chain problem
Harry Kroto 2004

32 C60 VS

33 Stellar Birth Harry Kroto 2004

34


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