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All results from a given calculation for CH3NHCH3 (Dimethylamine)

using model chemistry: QCISD/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 QCISD/3-21G
 hartrees
Energy at 0K-133.823786
Energy at 298.15K-133.831966
HF Energy-133.492219
Nuclear repulsion energy82.630952
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/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' 3394 3290 4.31      
2 A' 3091 2996 38.26      
3 A' 3049 2955 46.70      
4 A' 2937 2846 119.02      
5 A' 1599 1549 0.40      
6 A' 1573 1525 10.65      
7 A' 1516 1469 0.49      
8 A' 1285 1245 2.79      
9 A' 1208 1171 2.68      
10 A' 930 901 9.31      
11 A' 740 717 122.07      
12 A' 386 374 8.95      
13 A' 264 256 3.54      
14 A" 3089 2994 19.35      
15 A" 3047 2953 23.11      
16 A" 2933 2843 26.53      
17 A" 1593 1543 5.92      
18 A" 1563 1514 8.81      
19 A" 1529 1482 1.90      
20 A" 1490 1444 2.16      
21 A" 1146 1110 21.32      
22 A" 1100 1066 0.33      
23 A" 1039 1007 13.54      
24 A" 255 247 0.28      

Unscaled Zero Point Vibrational Energy (zpe) 20376.9 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 19749.3 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/3-21G
ABC
1.10382 0.29994 0.26352

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.027 0.605 0.000
H2 -0.790 1.228 0.000
C3 0.027 -0.233 1.238
C4 0.027 -0.233 -1.238
H5 -0.806 -0.964 1.291
H6 -0.806 -0.964 -1.291
H7 0.972 -0.793 1.277
H8 0.972 -0.793 -1.277
H9 -0.023 0.425 2.116
H10 -0.023 0.425 -2.116

Atom - Atom Distances (Å)
  N1 H2 C3 C4 H5 H6 H7 H8 H9 H10
N11.02721.49501.49502.19532.19532.11612.11612.12382.1238
H21.02722.08222.08222.54392.54392.96972.96972.38922.3892
C31.49502.08222.47601.10892.76071.09922.74451.09843.4181
C41.49502.08222.47602.76071.10892.74451.09923.41811.0984
H52.19532.54391.10892.76072.58151.78633.12801.79513.7611
H62.19532.54392.76071.10892.58153.12801.78633.76111.7951
H72.11612.96971.09922.74451.78633.12802.55411.78263.7396
H82.11612.96972.74451.09923.12801.78632.55413.73961.7826
H92.12382.38921.09843.41811.79513.76111.78263.73964.2313
H102.12382.38923.41811.09843.76111.79513.73961.78264.2313

picture of Dimethylamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 H5 114.115 N1 C3 H7 108.350
N1 C3 H9 108.996 N1 C4 H6 114.115
N1 C4 H8 108.350 N1 C4 H10 108.996
H2 N1 C3 109.899 H2 N1 C4 109.899
C3 N1 C4 111.807 H5 C3 H7 107.993
H5 C3 H9 108.827 H6 C4 H8 107.993
H6 C4 H10 108.827 H7 C3 H9 108.421
H8 C4 H10 108.421
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability