6 Molecular and Crystal Structures of Polymorphic …
225
(a)
(d)
(e)
(b)
(c)
(f)
(g)
(h)
(i)
Cu
N
N
N
N
N
N
N
N
TiO
N
N
N
N
N
N
N
N
N
H
O
H
N
O
N
O
N
O
Bu
Bu
O
O
OH
OH
S
H
N
NO
2
CN
CH
3
N
N
N
CN
NC
N
Cl
Cl
Cl
Cl
N
N
N
CN
NC
N
Br
Br
Br
Br
N
O
2 N
N
N
OH
N
SO
2
N O
H
Fig. 6.1
Chemical structures of dyes and related compounds reviewed in this chapter with their CSD codes: a
CuPc (CUPOCY), b
TiOPc (BITSAY), c
QA
(QNACRD), d N,N’-butylated
QA (WAMFAS), e
two 2,5-diamino-3,6-dicyano pyrazine dyes (KELFOX and KELGEO), f
5-methyl-2-[(2-nitrophenyl)amino]3-thiophenecarbonitrile: ROY (QAXMEH), g
1,8-dihydroxyanthraquinone (DHANQU), h N-(p-dimethylaminobenzylidene)-p-nitroaniline
(MABZNA) and
i
1-[(E)-({4-[(5-methyl-1,2-oxazol-3-yl)sulphamoyl]phenyl}imino)methyl]naphthalen-2-olate (ZULGUE)