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All results from a given calculation for CH3BH2 (methylborane)

using model chemistry: QCISD(T)/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 QCISD(T)/6-31G*
 hartrees
Energy at 0K-65.683455
Energy at 298.15K-65.687377
HF Energy-65.441129
Nuclear repulsion energy31.639978
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 QCISD(T)/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' 3096 2970        
2 A' 2999 2877        
3 A' 2608 2501        
4 A' 1524 1462        
5 A' 1386 1329        
6 A' 1280 1228        
7 A' 1111 1065        
8 A' 982 942        
9 A' 593 569        
10 A" 3143 3015        
11 A" 2680 2571        
12 A" 1492 1431        
13 A" 1093 1048        
14 A" 700 672        
15 A" 133 128        

Unscaled Zero Point Vibrational Energy (zpe) 12409.4 cm-1
Scaled (by 0.9593) Zero Point Vibrational Energy (zpe) 11904.3 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 QCISD(T)/6-31G*
ABC
3.17763 0.70925 0.64867

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.016 -0.688 0.000
B2 -0.016 0.878 0.000
H3 1.053 -0.979 0.000
H4 -0.456 -1.139 0.898
H5 -0.456 -1.139 -0.898
H6 0.016 1.498 -1.030
H7 0.016 1.498 1.030

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.56621.10781.09721.09722.41642.4164
B21.56622.14252.25152.25151.20211.2021
H31.10782.14251.76391.76392.87542.8754
H41.09722.25151.76391.79613.30022.6819
H51.09722.25151.76391.79612.68193.3002
H62.41641.20212.87543.30022.68192.0592
H72.41641.20212.87542.68193.30022.0592

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 121.026 C1 B2 H7 121.026
B2 C1 H3 105.200 B2 C1 H4 114.264
B2 C1 H5 114.264 H3 C1 H4 106.244
H3 C1 H5 106.244 H4 C1 H5 109.867
H6 B2 H7 117.857
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability