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All results from a given calculation for CH3BH2 (methylborane)

using model chemistry: HF/6-31G

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/6-31G
 hartrees
Energy at 0K-65.416520
Energy at 298.15K-65.420495
HF Energy-65.416520
Nuclear repulsion energy31.772274
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/6-31G
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' 3219 2907 24.79      
2 A' 3133 2829 7.30      
3 A' 2678 2418 128.20      
4 A' 1632 1474 5.19      
5 A' 1512 1365 60.06      
6 A' 1355 1224 57.48      
7 A' 1179 1065 105.84      
8 A' 1005 908 12.38      
9 A' 709 640 1.19      
10 A" 3261 2945 30.71      
11 A" 2741 2475 219.07      
12 A" 1603 1447 6.62      
13 A" 1174 1060 28.64      
14 A" 751 678 1.61      
15 A" 91 82 1.30      

Unscaled Zero Point Vibrational Energy (zpe) 13021.8 cm-1
Scaled (by 0.9029) Zero Point Vibrational Energy (zpe) 11757.3 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/6-31G
ABC
3.24952 0.70733 0.64880

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.011 -0.690 0.000
B2 -0.011 0.881 0.000
H3 1.034 -1.014 0.000
H4 -0.467 -1.123 0.884
H5 -0.467 -1.123 -0.884
H6 0.011 1.497 -1.019
H7 0.011 1.497 1.019

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.57141.09421.08481.08482.41272.4127
B21.57142.16462.23792.23791.19081.1908
H31.09422.16461.74501.74502.89642.8964
H41.08482.23791.74501.76793.27352.6669
H51.08482.23791.74501.76792.66693.2735
H62.41271.19082.89643.27352.66692.0385
H72.41271.19082.89642.66693.27352.0385

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 121.115 C1 B2 H7 121.115
B2 C1 H3 107.236 B2 C1 H4 113.551
B2 C1 H5 113.551 H3 C1 H4 106.420
H3 C1 H5 106.420 H4 C1 H5 109.147
H6 B2 H7 117.723
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.738      
2 B 0.420      
3 H 0.170      
4 H 0.166      
5 H 0.166      
6 H -0.092      
7 H -0.092      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.090 -0.467 0.000 0.476
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.578 -0.157 0.000
y -0.157 -16.635 0.000
z 0.000 0.000 -16.005
Traceless
 xyz
x 2.743 -0.157 0.000
y -0.157 -1.843 0.000
z 0.000 0.000 -0.899
Polar
3z2-r2-1.798
x2-y23.057
xy-0.157
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.543 -0.008 0.000
y -0.008 3.791 0.000
z 0.000 0.000 3.603


<r2> (average value of r2) Å2
<r2> 29.543
(<r2>)1/2 5.435