ISSN:
1572-9001
Keywords:
Methyl fluoride
;
rotational constants
;
equilibrium structure
;
ab initio
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract The equilibrium structure of CH3F has been determined using new sets of accurate rotational constants that have been determined by taking into account all the interactions between the excited vibrational states. This experimental structure is in excellent agreement with the equilibrium geometry calculated at the CCSD(T) level of theory with the cc-pV(5, Q)Z basis set (including corrections for the core correlation and for the effect of diffuse functions on fluorine). Finally, the experimental and ab initio structures have been combined by a least-squares analysis. The results are $$r_e \left( {C - C} \right) = 1.087\left( 1 \right){\AA},r_e \left( {C - F} \right) = 1.383\left( 1 \right){\AA},and\angle _e \left( {HCH} \right) = 110.2\left( 1 \right)^ \circ $$ , and L e(HCH) = 110.2 (1)°, where the uncertainties shown in parentheses correspond to three standard deviations.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1022085314343
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