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All results from a given calculation for CH3BH2 (methylborane)

using model chemistry: B1B95/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B1B95/6-31G**
 hartrees
Energy at 0K-65.885466
Energy at 298.15K-65.889400
HF Energy-65.885466
Nuclear repulsion energy31.828212
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 B1B95/6-31G**
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' 3124 2982 12.33      
2 A' 3017 2881 4.03      
3 A' 2607 2489 110.30      
4 A' 1506 1437 2.45      
5 A' 1359 1297 71.93      
6 A' 1260 1203 23.59      
7 A' 1086 1037 74.62      
8 A' 983 939 12.01      
9 A' 553 528 0.82      
10 A" 3176 3032 15.00      
11 A" 2680 2559 159.39      
12 A" 1465 1399 4.36      
13 A" 1069 1020 21.36      
14 A" 681 651 0.46      
15 A" 164 157 2.19      

Unscaled Zero Point Vibrational Energy (zpe) 12363.8 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 11805.0 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 B1B95/6-31G**
ABC
3.20778 0.71998 0.65744

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.019 -0.682 0.000
B2 -0.019 0.871 0.000
H3 1.053 -0.949 0.000
H4 -0.440 -1.145 0.895
H5 -0.440 -1.145 -0.895
H6 0.016 1.488 -1.027
H7 0.016 1.488 1.027

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.55321.10431.09211.09212.40112.4011
B21.55322.11172.24522.24521.19851.1985
H31.10432.11171.75161.75162.84012.8401
H41.09212.24521.75161.79083.29132.6749
H51.09212.24521.75161.79082.67493.2913
H62.40111.19852.84013.29132.67492.0537
H72.40111.19852.84012.67493.29132.0537

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 120.987 C1 B2 H7 120.987
B2 C1 H3 103.956 B2 C1 H4 115.045
B2 C1 H5 115.045 H3 C1 H4 105.782
H3 C1 H5 105.782 H4 C1 H5 110.147
H6 B2 H7 117.917
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.637      
2 B 0.135      
3 H 0.183      
4 H 0.178      
5 H 0.178      
6 H -0.018      
7 H -0.018      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.138 -0.715 0.000 0.728
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.389 -0.187 0.000
y -0.187 -15.977 0.000
z 0.000 0.000 -15.281
Traceless
 xyz
x 2.240 -0.187 0.000
y -0.187 -1.641 0.000
z 0.000 0.000 -0.598
Polar
3z2-r2-1.196
x2-y22.587
xy-0.187
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.722 -0.015 0.000
y -0.015 4.143 0.000
z 0.000 0.000 3.649


<r2> (average value of r2) Å2
<r2> 29.041
(<r2>)1/2 5.389