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All results from a given calculation for CH3BH2 (methylborane)

using model chemistry: CCD/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CCD/6-31G(2df,p)
 hartrees
Energy at 0K-65.751610
Energy at 298.15K-65.755564
HF Energy-65.451906
Nuclear repulsion energy31.764056
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 CCD/6-31G(2df,p)
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' 3148 2982 9.88      
2 A' 3049 2888 2.30      
3 A' 2641 2502 89.02      
4 A' 1514 1434 1.48      
5 A' 1363 1291 55.78      
6 A' 1285 1217 23.45      
7 A' 1110 1051 68.77      
8 A' 979 927 12.23      
9 A' 569 539 0.79      
10 A" 3199 3030 11.65      
11 A" 2718 2574 123.81      
12 A" 1477 1399 2.98      
13 A" 1086 1028 19.35      
14 A" 691 654 0.74      
15 A" 160 151 1.04      

Unscaled Zero Point Vibrational Energy (zpe) 12493.3 cm-1
Scaled (by 0.9472) Zero Point Vibrational Energy (zpe) 11833.6 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 CCD/6-31G(2df,p)
ABC
3.21597 0.71270 0.65194

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.017 -0.687 0.000
B2 -0.017 0.877 0.000
H3 1.051 -0.958 0.000
H4 -0.445 -1.143 0.894
H5 -0.445 -1.143 -0.894
H6 0.014 1.490 -1.024
H7 0.014 1.490 1.024

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.56481.10221.09061.09062.40662.4066
B21.56482.12362.25052.25051.19381.1938
H31.10222.12361.75271.75272.84912.8491
H41.09062.25051.75271.78733.29002.6765
H51.09062.25051.75271.78732.67653.2900
H62.40661.19382.84913.29002.67652.0479
H72.40661.19382.84912.67653.29002.0479

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 120.891 C1 B2 H7 120.891
B2 C1 H3 104.205 B2 C1 H4 114.711
B2 C1 H5 114.711 H3 C1 H4 106.119
H3 C1 H5 106.119 H4 C1 H5 110.049
H6 B2 H7 118.127
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability