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All results from a given calculation for CH3C(OH)=NH (Ethaninidic acid)

using model chemistry: MP2/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-31G(2df,p)
 hartrees
Energy at 0K-208.711751
Energy at 298.15K-208.718126
HF Energy-207.981389
Nuclear repulsion energy121.814757
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 MP2/6-31G(2df,p)
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' 3792 3581 61.31      
2 A' 3590 3391 6.44      
3 A' 3234 3054 5.79      
4 A' 3119 2946 2.72      
5 A' 1759 1661 169.81      
6 A' 1512 1428 22.55      
7 A' 1469 1387 69.47      
8 A' 1404 1326 0.55      
9 A' 1270 1200 97.53      
10 A' 1119 1057 172.53      
11 A' 1027 970 27.79      
12 A' 889 840 0.92      
13 A' 550 520 40.84      
14 A' 421 398 1.56      
15 A" 3208 3030 2.06      
16 A" 1499 1416 7.36      
17 A" 1076 1016 7.91      
18 A" 865 817 22.64      
19 A" 639 604 125.93      
20 A" 527 498 14.77      
21 A" 130 123 0.72      

Unscaled Zero Point Vibrational Energy (zpe) 16549.5 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 15631.0 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 MP2/6-31G(2df,p)
ABC
0.36303 0.31155 0.17303

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.133 0.000
C2 0.919 -1.051 0.000
N3 0.276 1.376 0.000
O4 -1.292 -0.264 0.000
H5 1.961 -0.740 0.000
H6 0.724 -1.667 0.879
H7 0.724 -1.667 -0.879
H8 1.282 1.512 0.000
H9 -1.804 0.557 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.49901.27351.35132.14702.12982.12981.88361.8528
C21.49902.51132.34651.08791.09071.09072.58953.1621
N31.27352.51132.26892.70573.19903.19901.01582.2351
O41.35132.34652.26893.28762.60822.60823.12770.9677
H52.14701.08792.70573.28761.77831.77832.35293.9823
H62.12981.09073.19902.60821.77831.75833.34553.4795
H72.12981.09073.19902.60821.77831.75833.34553.4795
H81.88362.58951.01583.12772.35293.34553.34553.2306
H91.85283.16212.23510.96773.98233.47953.47953.2306

picture of Ethaninidic acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 111.195 C1 C2 H6 109.649
C1 C2 H7 109.649 C1 N3 H8 110.223
C1 O4 H9 104.854 C2 C1 N3 129.681
C2 C1 O4 110.715 N3 C1 O4 119.604
H5 C2 H6 109.424 H5 C2 H7 109.424
H6 C2 H7 107.420
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability