M. Schwarz, H. Ehrenberg, M. Kloc
Dec 1, 2006
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Influential Citations
15
Citations
Journal
Heterocycles
Abstract
2,5,8-Triphenoxy-1,3,4,6,7,9,9b-heptaazaphenalene (triphenyl cyamelurate, C 6 N 7 (OPh) 3 ) was synthesized under solvent free conditions from cyameluric chloride (C 6 N 7 Cl 3 ) and phenol via nucleophilic substitution. Needle-shaped crystals were obtained via a vapor transport method. Single crystal XRD revealed that C 6 N 7 (OPh) 3 crystallizes in the monoclinic space group P 2 1 /c with the lattice parameters a = 14.463(17) A, b = 4.697(3) A, c = 31.60(4) A and β = 99.76(9)°. All three phenyl rings are rotated and inclined differently with respect to the central heptazine units, which themselves form inclined stacks along the b axis. Intermolecular cohesion is provided via dipolar, aromatic and van-der-Waals interactions as well as some weak C-H···N and C-H···O hydrogen bridges.