Phenalenyls, Cyclopentadienyls, and Other Carbon-Centered Radicals - Stable Radicals: Fundamentals and Applied Aspects of Odd-Electron Compounds - page 138

Br Br

Br Br

Br Br

Br

Br

Penta DPC

Tris BAC
(a)

(b)

Figure 3.65 Chemical structures of (a) tricarbene, Tris BAC , and (b) pentacarbene, Penta DPC , based on
bis(9-anthryl)carbene.

(a)

N2

N1

C16

C11

C1

C26 C11 C12

C21 C13

C25

C16

C22 C14

C24

C13

C15

C14

C23

C12

C15

(b) (c)

C1A

C21A C11A

(d)

Figure 3.66 (a) Generation of DPC-Cl 6 by photo-irradiation of the corresponding precursor DPC-Cl 6 (N 2 )
in the single crystal. (b) Perspective view of DPC-Cl 6 (N 2 ) . (c) Perspective view of a disordered structure of
DPC-Cl 6 (N 2 ) (openline)and DPC-Cl 6 (solidline)withoccupancyfactorsof0.803(5)and0.197(5),respectively.
(d)Perspectiveviewof DPC-Cl 6 andadinitrogenmolecule(with DPC-Cl 6 (N 2 ) omitted)inpartc.(b,c,dReprinted
withpermissionfrom[106].Copyright2001AmericanChemicalSociety.)