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All results from a given calculation for CH3BH2 (methylborane)

using model chemistry: HF/CEP-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 HF/CEP-31G*
 hartrees
Energy at 0K-11.064165
Energy at 298.15K-11.068126
HF Energy-11.064165
Nuclear repulsion energy18.567781
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-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' 3246 2915 46.26      
2 A' 3165 2842 17.49      
3 A' 2671 2398 160.38      
4 A' 1610 1446 3.56      
5 A' 1478 1327 61.34      
6 A' 1318 1183 54.26      
7 A' 1158 1040 64.77      
8 A' 987 887 11.64      
9 A' 646 580 1.90      
10 A" 3290 2954 58.12      
11 A" 2721 2443 282.71      
12 A" 1578 1417 5.00      
13 A" 1130 1015 21.50      
14 A" 712 639 2.36      
15 A" 123 110 1.06      

Unscaled Zero Point Vibrational Energy (zpe) 12915.8 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 11598.4 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-31G*
ABC
3.19736 0.69691 0.63875

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.013 -0.697 0.000
B2 -0.013 0.888 0.000
H3 1.045 -0.999 0.000
H4 -0.463 -1.137 0.892
H5 -0.463 -1.137 -0.892
H6 0.013 1.507 -1.029
H7 0.013 1.507 1.029

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.58501.10041.09151.09152.43262.4326
B21.58502.16372.25772.25771.20091.2009
H31.10042.16371.75711.75712.89942.8994
H41.09152.25771.75711.78453.30242.6898
H51.09152.25771.75711.78452.68983.3024
H62.43261.20092.89943.30242.68982.0573
H72.43261.20092.89942.68983.30242.0573

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 121.040 C1 B2 H7 121.040
B2 C1 H3 105.946 B2 C1 H4 113.752
B2 C1 H5 113.752 H3 C1 H4 106.570
H3 C1 H5 106.570 H4 C1 H5 109.668
H6 B2 H7 117.859
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.254      
2 B -0.260      
3 H 0.122      
4 H 0.136      
5 H 0.136      
6 H 0.060      
7 H 0.060      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.069 -0.392 0.000 0.398
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.407 -0.099 0.000
y -0.099 -16.315 0.000
z 0.000 0.000 -15.320
Traceless
 xyz
x 2.410 -0.099 0.000
y -0.099 -1.951 0.000
z 0.000 0.000 -0.459
Polar
3z2-r2-0.918
x2-y22.908
xy-0.099
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.602 0.005 0.000
y 0.005 3.477 0.000
z 0.000 0.000 3.000


<r2> (average value of r2) Å2
<r2> 27.042
(<r2>)1/2 5.200