Novel crystalline polymer, crystalline hydrogenated poly(endo-dicyclopentadiene), was developed on the basis of the development of new cis- and iso-specific ROMP catalysts such as MoO(rac-5,5′,6,6′-Me4-3,3′-t-Bu2-2,2′-biphenolate)2.
Trennung ist die Konsequenz: Selbstorganisierte chirale Überstrukturen, resultierend aus zwei unterschiedlichen helicalen Wechselwirkungen, wurden in der Kristallstruktur der achiralen Verbindung 1 gefunden. Durch die Wechselwirkungen entstehen Ar‐H⋅⋅⋅π‐ und OH⋅⋅⋅OC‐Anordnungen. Das Racemat der Helices spaltet sich spontan in individuelle Einkristalle. Nur eine der Hydroxygruppen (grün) ist an der Bildung der helicalen wasserstoffverbrückten Anordnungen beteiligt.
Nitrile Hydratase (NHase) from Rhodococcus sp. N771 contains a mononuclear non-heme iron center. NHase is inactivated by nitrosylation. The nitric monoxide molecule on the iron center is dissociated by photo-irradiation, possibly replaced with a water molecule in the active state. Sulfur atoms of
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