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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-11.073053
Energy at 298.15K-11.077029
HF Energy-11.073053
Nuclear repulsion energy18.640252
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' 3210 2900 37.34      
2 A' 3129 2827 13.12      
3 A' 2682 2423 150.80      
4 A' 1610 1454 3.23      
5 A' 1474 1331 53.48      
6 A' 1330 1201 54.82      
7 A' 1167 1054 81.45      
8 A' 983 888 11.49      
9 A' 652 589 2.10      
10 A" 3253 2939 46.53      
11 A" 2749 2483 256.40      
12 A" 1580 1427 5.04      
13 A" 1143 1033 24.22      
14 A" 721 651 3.19      
15 A" 120 109 0.73      

Unscaled Zero Point Vibrational Energy (zpe) 12900.9 cm-1
Scaled (by 0.9034) Zero Point Vibrational Energy (zpe) 11654.7 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 HF/CEP-121G*
ABC
3.23017 0.70165 0.64331

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 -0.013 -0.694 0.000
B2 -0.013 0.885 0.000
H3 1.040 -1.000 0.000
H4 -0.460 -1.134 0.887
H5 -0.460 -1.134 -0.887
H6 0.011 1.502 -1.023
H7 0.011 1.502 1.023

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.57911.09641.08731.08732.42232.4223
B21.57912.15982.25122.25121.19491.1949
H31.09642.15981.74821.74822.89232.8923
H41.08732.25121.74821.77493.28992.6815
H51.08732.25121.74821.77492.68153.2899
H62.42231.19492.89233.28992.68152.0469
H72.42231.19492.89232.68153.28992.0469

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 121.047 C1 B2 H7 121.047
B2 C1 H3 106.250 B2 C1 H4 113.915
B2 C1 H5 113.915 H3 C1 H4 106.365
H3 C1 H5 106.365 H4 C1 H5 109.416
H6 B2 H7 117.852
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 -0.610      
2 B 0.209      
3 H 0.167      
4 H 0.167      
5 H 0.167      
6 H -0.050      
7 H -0.050      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.066 -0.447 0.000 0.452
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.504 -0.121 0.000
y -0.121 -16.679 0.000
z 0.000 0.000 -15.794
Traceless
 xyz
x 2.732 -0.121 0.000
y -0.121 -2.031 0.000
z 0.000 0.000 -0.702
Polar
3z2-r2-1.404
x2-y23.175
xy-0.121
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.772 -0.005 0.000
y -0.005 3.988 0.000
z 0.000 0.000 3.770


<r2> (average value of r2) Å2
<r2> 27.110
(<r2>)1/2 5.207