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All results from a given calculation for CH3BH2 (methylborane)

using model chemistry: MP2=FULL/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2=FULL/3-21G*
 hartrees
Energy at 0K-65.224199
Energy at 298.15K-65.228111
HF Energy-65.077773
Nuclear repulsion energy31.510406
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 MP2=FULL/3-21G*
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' 3114 2952 11.01      
2 A' 3020 2863 2.85      
3 A' 2631 2494 87.20      
4 A' 1575 1493 3.58      
5 A' 1432 1358 49.89      
6 A' 1303 1235 49.49      
7 A' 1135 1076 91.93      
8 A' 970 919 14.26      
9 A' 664 630 0.12      
10 A" 3160 2996 14.96      
11 A" 2706 2565 138.87      
12 A" 1545 1465 4.70      
13 A" 1123 1065 24.86      
14 A" 724 686 0.44      
15 A" 88 83 1.97      

Unscaled Zero Point Vibrational Energy (zpe) 12594.6 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 11939.7 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 MP2=FULL/3-21G*
ABC
3.18023 0.69780 0.63965

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.013 -0.696 0.000
B2 -0.013 0.887 0.000
H3 1.048 -1.011 0.000
H4 -0.468 -1.132 0.895
H5 -0.468 -1.132 -0.895
H6 0.014 1.507 -1.029
H7 0.014 1.507 1.029

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.58231.10651.09541.09542.43112.4311
B21.58232.17442.25482.25481.20141.2014
H31.10652.17441.76511.76512.91042.9104
H41.09542.25481.76511.79103.30122.6859
H51.09542.25481.76511.79102.68593.3012
H62.43111.20142.91043.30122.68592.0570
H72.43111.20142.91042.68593.30122.0570

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 121.089 C1 B2 H7 121.089
B2 C1 H3 106.591 B2 C1 H4 113.467
B2 C1 H5 113.467 H3 C1 H4 106.567
H3 C1 H5 106.567 H4 C1 H5 109.662
H6 B2 H7 117.760
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability