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All results from a given calculation for CH3BH2 (methylborane)

using model chemistry: QCISD/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD/6-311G*
 hartrees
Energy at 0K-65.703451
Energy at 298.15K-65.707383
HF Energy-65.451814
Nuclear repulsion energy31.649545
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 QCISD/6-311G*
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' 3081 2949 17.06      
2 A' 2985 2858 4.03      
3 A' 2548 2439 102.60      
4 A' 1512 1448 5.20      
5 A' 1373 1314 63.82      
6 A' 1253 1199 29.56      
7 A' 1100 1053 61.27      
8 A' 972 931 10.46      
9 A' 584 559 0.45      
10 A" 3130 2996 20.75      
11 A" 2619 2507 152.09      
12 A" 1481 1418 5.99      
13 A" 1083 1037 20.63      
14 A" 693 664 1.14      
15 A" 144 138 1.36      

Unscaled Zero Point Vibrational Energy (zpe) 12277.8 cm-1
Scaled (by 0.9574) Zero Point Vibrational Energy (zpe) 11754.8 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 QCISD/6-311G*
ABC
3.18003 0.70959 0.64853

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.016 -0.688 0.000
B2 -0.016 0.878 0.000
H3 1.053 -0.973 0.000
H4 -0.451 -1.142 0.897
H5 -0.451 -1.142 -0.897
H6 0.015 1.497 -1.032
H7 0.015 1.497 1.032

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.56611.10671.09531.09532.41682.4168
B21.56612.13812.25272.25271.20381.2038
H31.10672.13811.75911.75912.87152.8715
H41.09532.25271.75911.79413.30212.6834
H51.09532.25271.75911.79412.68343.3021
H62.41681.20382.87153.30212.68342.0641
H72.41681.20382.87152.68343.30212.0641

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 120.942 C1 B2 H7 120.942
B2 C1 H3 104.940 B2 C1 H4 114.493
B2 C1 H5 114.493 H3 C1 H4 106.041
H3 C1 H5 106.041 H4 C1 H5 109.976
H6 B2 H7 118.028
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability