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All results from a given calculation for CH3BH2 (methylborane)

using model chemistry: B3LYP/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 B3LYP/CEP-31G*
 hartrees
Energy at 0K-11.423248
Energy at 298.15K-11.427146
HF Energy-11.423248
Nuclear repulsion energy18.495883
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 B3LYP/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' 3079 2973 26.25      
2 A' 2984 2882 11.02      
3 A' 2558 2470 125.98      
4 A' 1485 1434 5.78      
5 A' 1352 1306 91.94      
6 A' 1226 1184 28.09      
7 A' 1086 1048 46.51      
8 A' 956 923 11.37      
9 A' 570 551 1.34      
10 A" 3130 3023 35.94      
11 A" 2617 2527 201.13      
12 A" 1451 1401 7.91      
13 A" 1047 1011 20.22      
14 A" 672 649 0.15      
15 A" 151 146 2.56      

Unscaled Zero Point Vibrational Energy (zpe) 12182.0 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 11764.1 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 B3LYP/CEP-31G*
ABC
3.14751 0.70019 0.64020

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.017 -0.693 0.000
B2 -0.017 0.884 0.000
H3 1.062 -0.972 0.000
H4 -0.450 -1.152 0.905
H5 -0.450 -1.152 -0.905
H6 0.013 1.507 -1.034
H7 0.013 1.507 1.034

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.57721.11471.10291.10292.43112.4311
B21.57722.14742.26942.26941.20751.2075
H31.11472.14741.77101.77102.88402.8840
H41.10292.26941.77101.81003.32282.7015
H51.10292.26941.77101.81002.70153.3228
H62.43111.20752.88403.32282.70152.0680
H72.43111.20752.88402.70153.32282.0680

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 121.052 C1 B2 H7 121.052
B2 C1 H3 104.511 B2 C1 H4 114.565
B2 C1 H5 114.565 H3 C1 H4 105.995
H3 C1 H5 105.995 H4 C1 H5 110.284
H6 B2 H7 117.817
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.282      
2 B -0.477      
3 H 0.155      
4 H 0.175      
5 H 0.175      
6 H 0.127      
7 H 0.127      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.129 -0.637 0.000 0.649
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.490 -0.118 0.000
y -0.118 -15.965 0.000
z 0.000 0.000 -15.081
Traceless
 xyz
x 2.033 -0.118 0.000
y -0.118 -1.680 0.000
z 0.000 0.000 -0.353
Polar
3z2-r2-0.707
x2-y22.475
xy-0.118
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.804 -0.008 0.000
y -0.008 3.928 0.000
z 0.000 0.000 3.103


<r2> (average value of r2) Å2
<r2> 26.989
(<r2>)1/2 5.195