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Sponsored by the Center for Science and Technology Development of the Ministry of Education
Supervised by Ministry of Education of the People's Republic of China
The boron carbonyl compounds B6(CO)n(n=1-6) have been optimized with HF/3-21G and B3LYP/6-31G*(DFT). Our calculations show that the most stable B6(CO)n(n=1~6) have planar structures at B3LYP/6-31G*. With the exceptional of the triplet B6(CO)3-D2h and B6(CO)4-C2h, other four ground structures are singlet. The vibrational frequencies, carbonyl average binding energy and NICS (Nuclear Independent Chemical Shift) of these compounds also have been discussed.
Keywords:Boron carbonyl compounds;Density functional method;Structure and stability;NICS