return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH3BH2 (methylborane)

using model chemistry: LSDA/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at LSDA/3-21G
 hartrees
Energy at 0K-65.172086
Energy at 298.15K-65.175974
HF Energy-65.172086
Nuclear repulsion energy31.712783
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 LSDA/3-21G
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' 3020 2971 4.23      
2 A' 2901 2853 7.13      
3 A' 2540 2498 71.01      
4 A' 1467 1443 6.73      
5 A' 1321 1300 99.00      
6 A' 1208 1188 17.42      
7 A' 1054 1037 61.30      
8 A' 989 973 13.65      
9 A' 575 566 3.86      
10 A" 3078 3028 5.03      
11 A" 2625 2582 98.69      
12 A" 1428 1404 8.81      
13 A" 1044 1027 25.79      
14 A" 677 666 0.16      
15 A" 135 133 5.96      

Unscaled Zero Point Vibrational Energy (zpe) 12030.7 cm-1
Scaled (by 0.9836) Zero Point Vibrational Energy (zpe) 11833.4 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 LSDA/3-21G
ABC
3.13580 0.72314 0.65873

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.019 -0.678 0.000
B2 -0.019 0.866 0.000
H3 1.066 -0.956 0.000
H4 -0.443 -1.142 0.908
H5 -0.443 -1.142 -0.908
H6 0.015 1.490 -1.037
H7 0.015 1.490 1.037

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.54451.11991.10431.10432.40372.4037
B21.54452.12082.24472.24471.21051.2105
H31.11992.12081.77101.77102.85702.8570
H41.10432.24471.77101.81553.30472.6752
H51.10432.24471.77101.81552.67523.3047
H62.40371.21052.85703.30472.67522.0737
H72.40371.21052.85702.67523.30472.0737

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 121.020 C1 B2 H7 121.020
B2 C1 H3 104.361 B2 C1 H4 114.852
B2 C1 H5 114.852 H3 C1 H4 105.546
H3 C1 H5 105.546 H4 C1 H5 110.574
H6 B2 H7 117.858
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.866      
2 B 0.082      
3 H 0.241      
4 H 0.227      
5 H 0.227      
6 H 0.044      
7 H 0.044      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.229 -0.948 0.000 0.975
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.843 -0.246 0.000
y -0.246 -16.031 0.000
z 0.000 0.000 -15.472
Traceless
 xyz
x 1.908 -0.246 0.000
y -0.246 -1.374 0.000
z 0.000 0.000 -0.535
Polar
3z2-r2-1.070
x2-y22.188
xy-0.246
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.744 -0.045 0.000
y -0.045 4.161 0.000
z 0.000 0.000 3.504


<r2> (average value of r2) Å2
<r2> 29.250
(<r2>)1/2 5.408