return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH3BH2 (methylborane)

using model chemistry: CISD/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CISD/6-31G
 hartrees
Energy at 0K-65.578419
Energy at 298.15K-65.582315
HF Energy-65.415865
Nuclear repulsion energy31.465191
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 CISD/6-31G
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' 3088 2896 21.16      
2 A' 3001 2814 5.40      
3 A' 2584 2423 100.53      
4 A' 1547 1451 4.05      
5 A' 1428 1339 48.27      
6 A' 1291 1211 46.50      
7 A' 1127 1057 81.31      
8 A' 972 912 11.41      
9 A' 657 616 0.40      
10 A" 3131 2936 27.16      
11 A" 2653 2488 167.64      
12 A" 1519 1425 5.09      
13 A" 1118 1048 23.17      
14 A" 717 672 1.03      
15 A" 85 80 1.47      

Unscaled Zero Point Vibrational Energy (zpe) 12458.7 cm-1
Scaled (by 0.9378) Zero Point Vibrational Energy (zpe) 11683.7 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 CISD/6-31G
ABC
3.16648 0.69707 0.63893

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.012 -0.695 0.000
B2 -0.012 0.887 0.000
H3 1.049 -1.018 0.000
H4 -0.472 -1.133 0.897
H5 -0.472 -1.133 -0.897
H6 0.015 1.510 -1.031
H7 0.015 1.510 1.031

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.58121.10921.09921.09922.43362.4336
B21.58122.17982.25742.25741.20481.2048
H31.10922.17981.76961.76962.91872.9187
H41.09922.25741.76961.79343.30732.6910
H51.09922.25741.76961.79342.69103.3073
H62.43361.20482.91873.30732.69102.0615
H72.43361.20482.91872.69103.30732.0615

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 121.150 C1 B2 H7 121.150
B2 C1 H3 106.924 B2 C1 H4 113.524
B2 C1 H5 113.524 H3 C1 H4 106.511
H3 C1 H5 106.511 H4 C1 H5 109.335
H6 B2 H7 117.634
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability