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All results from a given calculation for CH3BH2 (methylborane)

using model chemistry: HF/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/CEP-121G
 hartrees
Energy at 0K-11.045348
Energy at 298.15K-11.049317
HF Energy-11.045348
Nuclear repulsion energy18.621940
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 HF/CEP-121G
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' 3190 2911 41.58      
2 A' 3099 2828 10.73      
3 A' 2628 2398 147.93      
4 A' 1615 1474 7.47      
5 A' 1489 1359 65.30      
6 A' 1302 1188 53.89      
7 A' 1166 1064 82.16      
8 A' 990 903 10.63      
9 A' 690 630 1.01      
10 A" 3237 2954 48.68      
11 A" 2703 2467 251.66      
12 A" 1589 1450 8.82      
13 A" 1150 1049 28.76      
14 A" 730 666 2.30      
15 A" 94 86 1.39      

Unscaled Zero Point Vibrational Energy (zpe) 12836.6 cm-1
Scaled (by 0.9125) Zero Point Vibrational Energy (zpe) 11713.4 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 HF/CEP-121G
ABC
3.22019 0.70056 0.64234

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.011 -0.695 0.000
B2 -0.011 0.885 0.000
H3 1.037 -1.014 0.000
H4 -0.467 -1.127 0.887
H5 -0.467 -1.127 -0.887
H6 0.011 1.506 -1.027
H7 0.011 1.506 1.027

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.57951.09641.08671.08672.42882.4288
B21.57952.16952.24562.24561.20021.2002
H31.09642.16951.74991.74992.90902.9090
H41.08672.24561.74991.77303.29022.6805
H51.08672.24561.74991.77302.68053.2902
H62.42881.20022.90903.29022.68052.0530
H72.42881.20022.90902.68053.29022.0530

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 121.191 C1 B2 H7 121.191
B2 C1 H3 106.955 B2 C1 H4 113.471
B2 C1 H5 113.471 H3 C1 H4 106.560
H3 C1 H5 106.560 H4 C1 H5 109.326
H6 B2 H7 117.576
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.579      
2 B 0.230      
3 H 0.155      
4 H 0.150      
5 H 0.150      
6 H -0.053      
7 H -0.053      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.099 -0.490 0.000 0.499
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.579 -0.141 0.000
y -0.141 -16.702 0.000
z 0.000 0.000 -15.892
Traceless
 xyz
x 2.718 -0.141 0.000
y -0.141 -1.967 0.000
z 0.000 0.000 -0.751
Polar
3z2-r2-1.503
x2-y23.123
xy-0.141
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.697 -0.006 0.000
y -0.006 3.909 0.000
z 0.000 0.000 3.753


<r2> (average value of r2) Å2
<r2> 27.195
(<r2>)1/2 5.215