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: QCISD(TQ)/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(TQ)/6-31G*
 hartrees
Energy at 0K-65.683763
Energy at 298.15K-65.687684
HF Energy-65.441138
Nuclear repulsion energy31.641696
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(TQ)/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' 3097 3097        
2 A' 3002 3002        
3 A' 2608 2608        
4 A' 1524 1524        
5 A' 1386 1386        
6 A' 1281 1281        
7 A' 1111 1111        
8 A' 982 982        
9 A' 594 594        
10 A" 3144 3144        
11 A" 2680 2680        
12 A" 1492 1492        
13 A" 1093 1093        
14 A" 700 700        
15 A" 132 132        

Unscaled Zero Point Vibrational Energy (zpe) 12412.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12412.9 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(TQ)/6-31G*
ABC
3.17801 0.70928 0.64871

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(TQ)/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 -0.457 -1.139 0.898
H5 -0.457 -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
C11.56621.10761.09711.09712.41642.4164
B21.56622.14272.25122.25121.20201.2020
H31.10762.14271.76381.76382.87572.8757
H41.09712.25121.76381.79593.29982.6815
H51.09712.25121.76381.79592.68153.2998
H62.41641.20202.87573.29982.68152.0591
H72.41641.20202.87572.68153.29982.0591

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 121.028 C1 B2 H7 121.028
B2 C1 H3 105.225 B2 C1 H4 114.240
B2 C1 H5 114.240 H3 C1 H4 106.260
H3 C1 H5 106.260 H4 C1 H5 109.865
H6 B2 H7 117.855
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability