List of Articles Carbene Open Access Article Abstract Page Full-Text 1 - Theoretical Study of Addition Reaction of Carbene and Zigzag Single-walled Carbon Nanotube Saeid Abedini Khoramie Shahram Moradi Somayeh Miryousefi Samira Eftekharjoo Open Access Article Abstract Page Full-Text 2 - Singlet-Triplet Energy Splitting of Divalent Five-Membered Ring NI2C2H2C (M = N,P, As and Sb) M. M. Hashemi M. Mirezaei Open Access Article Abstract Page Full-Text 3 - Electronic effects at 2 and 7 α–position of divalent unsaturated seven membered ring R2C6H6M (M=C, Si, Ge, Sn, Pb) Eynallah Abolfathi