AM1 treatment of silacyclacenes

Türker, Burhan Lemi
Semi-empirical molecular orbital treatment at the level of AM1 type has been performed on Huckel type silacyclacenes having arenoid rings (R) of 2-9. The first and second type cryptoannulenic effects are defined.


AM1 treatment of monosilacyclacenes
Türker, Burhan Lemi (Informa UK Limited, 1997-01-01)
Semi-empirical molecular orbital calculations at the level of AM1 type have been performed on Huckel type monosilacyclacenes having arenoid rings (R) of 2-7. Silicon atom at the peri and fusion points of arenoid rings were separately considered for each case of R.
AM1 treatment of cyclophanes with vinylic bridges
Türker, Burhan Lemi (Informa UK Limited, 1999-01-01)
Semi-empirical molecular orbital treatment at the level of AM1 type has been performed on the cyclophanes having vinylic bridges. The Hamiltonicity of the cyclophanes is introduced. It has been found that within the isomeric set of these endothermic compounds, the least and the most endothermic ones are Hamiltonian and nonHamiltonian, respectively.
AM1, MNDO and MINDO/3 treatments of Huckel type cyclacenes
Tuerker, Lemi; Guemues, Selcuk (Informa UK Limited, 2006-01-01)
Huckel type cyclacenes having R = 3-10 have been subjected to quantum chemical analyses at the level of AM1, MNDO and MINDO/3 (UHF and RHF) type semi-empirical treatments. The structures have been found to be stable but endothermic in nature. No cryptoannulenic effect has been observed when AM1 (UHF) and MNDO (UHF) treatments are used. Whereas MINDO/3 (UHF) and all the RHF type calculations indicated certain degree of cryptoannulenic effect R = 4 through 8 for the heat of formation values. Frontier molecula...
[2(2)]-para-cyclophane-fused tetraazaporphyrins-AM1 treatment
Türker, Burhan Lemi (Informa UK Limited, 2000-01-01)
Di- and tri- [2(2)]-para-cyclophane fused metal-free tetraazaporpyrins were subjected to AM1 type semiempirical molecular orbital treatment. The calculations predict that they should be stable but endothermic structures. Some quantum chemical and physicochemical properties of them have been presented as well.
Furoxan Derivatives of Pyrene - A DFT Study
Türker, Burhan Lemi (Informa UK Limited, 2018-01-01)
Furoxan-fused pyrenes and their dinitroso derivatives (obtained by furoxan ring opening) are considered for density functional treatment at the level of B3LYP/6-31G(d,p). Embedded benzofuroxan moiety in the furoxan-fused pyrene system is thought to undergo ring opening and reclosure process analogously to benzofuroxan itself. The stabilities, structural features, NICS(0) values, IR, and UV-VIS spectral aspects, etc., are investigated comparatively for these isomeric furoxan-fused pyrenes and their isomeric ...
Citation Formats
B. L. Türker, “AM1 treatment of silacyclacenes,” POLYCYCLIC AROMATIC COMPOUNDS, pp. 213–219, 1997, Accessed: 00, 2020. [Online]. Available: