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All results from a given calculation for CH3BH2 (methylborane)

using model chemistry: B3PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/6-31G*
 hartrees
Energy at 0K-65.916164
Energy at 298.15K-65.920069
HF Energy-65.916164
Nuclear repulsion energy31.736822
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 B3PW91/6-31G*
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' 3100 2966 13.49      
2 A' 3000 2871 3.63      
3 A' 2596 2483 109.37      
4 A' 1502 1437 2.55      
5 A' 1356 1298 68.49      
6 A' 1255 1201 23.81      
7 A' 1088 1041 73.85      
8 A' 976 934 11.36      
9 A' 566 542 0.68      
10 A" 3150 3014 16.40      
11 A" 2668 2552 157.53      
12 A" 1463 1400 4.52      
13 A" 1067 1021 21.24      
14 A" 683 654 0.36      
15 A" 146 140 2.22      

Unscaled Zero Point Vibrational Energy (zpe) 12308.3 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 11775.4 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 B3PW91/6-31G*
ABC
3.19391 0.71519 0.65334

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.018 -0.684 0.000
B2 -0.018 0.874 0.000
H3 1.054 -0.961 0.000
H4 -0.445 -1.145 0.897
H5 -0.445 -1.145 -0.897
H6 0.015 1.493 -1.029
H7 0.015 1.493 1.029

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.55821.10661.09511.09512.40832.4083
B21.55822.12492.25022.25021.20101.2010
H31.10662.12491.75591.75592.85662.8566
H41.09512.25021.75591.79423.29842.6811
H51.09512.25021.75591.79422.68113.2984
H62.40831.20102.85663.29842.68112.0572
H72.40831.20102.85662.68113.29842.0572

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 121.031 C1 B2 H7 121.031
B2 C1 H3 104.490 B2 C1 H4 114.887
B2 C1 H5 114.887 H3 C1 H4 105.786
H3 C1 H5 105.786 H4 C1 H5 110.000
H6 B2 H7 117.843
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.655      
2 B 0.132      
3 H 0.188      
4 H 0.183      
5 H 0.183      
6 H -0.016      
7 H -0.016      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.135 -0.715 0.000 0.728
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.390 -0.183 0.000
y -0.183 -15.976 0.000
z 0.000 0.000 -15.275
Traceless
 xyz
x 2.235 -0.183 0.000
y -0.183 -1.644 0.000
z 0.000 0.000 -0.592
Polar
3z2-r2-1.183
x2-y22.586
xy-0.183
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.741 -0.017 0.000
y -0.017 4.166 0.000
z 0.000 0.000 3.674


<r2> (average value of r2) Å2
<r2> 29.162
(<r2>)1/2 5.400