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All results from a given calculation for CH3BH2 (methylborane)

using model chemistry: CBS-Q

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CBS-Q
 hartrees
Energy at 0K-65.765618
Energy at 298.15K-65.760690
HF Energy-65.440047
Nuclear repulsion energy31.676051
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at CBS-Q
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3222 3222 25.23      
2 A' 3136 3136 7.91      
3 A' 2675 2675 123.47      
4 A' 1615 1615 1.50      
5 A' 1473 1473 45.46      
6 A' 1339 1339 46.43      
7 A' 1156 1156 88.90      
8 A' 989 989 11.48      
9 A' 643 643 1.48      
10 A" 3264 3264 31.34      
11 A" 2741 2741 192.97      
12 A" 1583 1583 2.80      
13 A" 1143 1143 22.50      
14 A" 721 721 2.04      
15 A" 123 123 0.65      

Unscaled Zero Point Vibrational Energy (zpe) 12911.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12911.2 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at CBS-Q
ABC
3.18058 0.70897 0.64800

See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.013 -0.692 0.000
B2 -0.013 0.883 0.000
H3 1.040 -0.998 0.000
H4 -0.461 -1.134 0.888
H5 -0.461 -1.134 -0.888
H6 0.014 1.501 -1.026
H7 0.014 1.501 1.026

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.57581.09681.08821.08822.42192.4219
B21.57582.15612.24952.24951.19801.1980
H31.09682.15611.74911.74912.88982.8898
H41.08822.24951.74911.77673.29182.6815
H51.08822.24951.74911.77672.68153.2918
H62.42191.19802.88983.29182.68152.0518
H72.42191.19802.88982.68153.29182.0518

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 121.051 C1 B2 H7 121.051
B2 C1 H3 106.169 B2 C1 H4 113.956
B2 C1 H5 113.956 H3 C1 H4 106.352
H3 C1 H5 106.352 H4 C1 H5 109.431
H6 B2 H7 117.829
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability