return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C4H7NO (Ethoxyacetonitrile)

using model chemistry: MP4/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP4/3-21G
 hartrees
Energy at 0K-283.898745
Energy at 298.15K-283.906498
HF Energy-283.239201
Nuclear repulsion energy211.897177
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 MP4/3-21G
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' 3119 3025        
2 A' 3048 2956        
3 A' 2983 2893        
4 A' 2981 2891        
5 A' 2171 2105        
6 A' 1604 1555        
7 A' 1583 1535        
8 A' 1579 1531        
9 A' 1474 1429        
10 A' 1461 1417        
11 A' 1393 1351        
12 A' 1155 1120        
13 A' 1073 1040        
14 A' 985 955        
15 A' 924 896        
16 A' 863 837        
17 A' 557 540        
18 A' 406 393        
19 A' 297 288        
20 A' 129 125        
21 A" 3131 3036        
22 A" 3015 2924        
23 A" 3008 2918        
24 A" 1564 1517        
25 A" 1327 1287        
26 A" 1270 1232        
27 A" 1203 1166        
28 A" 1069 1037        
29 A" 864 838        
30 A" 419 407        
31 A" 241 234        
32 A" 105 102        
33 A" 73 70        

Unscaled Zero Point Vibrational Energy (zpe) 23536.4 cm-1
Scaled (by 0.9698) Zero Point Vibrational Energy (zpe) 22825.6 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 MP4/3-21G
ABC
0.47253 0.04883 0.04541

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.997 2.552 0.000
C2 -1.316 1.045 0.000
O3 0.000 0.363 0.000
C4 -0.177 -1.099 0.000
C5 1.179 -1.691 0.000
N6 2.266 -2.160 0.000
H7 -1.925 3.141 0.000
H8 -0.408 2.799 0.892
H9 -0.408 2.799 -0.892
H10 -1.896 0.760 -0.895
H11 -1.896 0.760 0.895
H12 -0.729 -1.440 -0.894
H13 -0.729 -1.440 0.894

Atom - Atom Distances (Å)
  C1 C2 O3 C4 C5 N6 H7 H8 H9 H10 H11 H12 H13
C11.53982.40533.74144.76855.73121.09871.09691.09692.19532.19534.09974.0997
C21.53981.48262.42783.70334.80672.18252.16692.16691.10411.10412.70602.7060
O32.40531.48261.47222.36843.39103.37982.62612.62612.13422.13422.14062.1406
C43.74142.42781.47221.47962.66334.58604.00504.00502.68552.68551.10481.1048
C54.76853.70332.36841.47961.18375.74324.84534.84534.03314.03312.12172.1217
N65.73124.80673.39102.66331.18376.75735.70415.70415.16235.16233.20713.2071
H71.09872.18253.37984.58605.74326.75731.79201.79202.54422.54424.81874.8187
H81.09692.16692.62614.00504.84535.70411.79201.78323.09272.52424.61124.2515
H91.09692.16692.62614.00504.84535.70411.79201.78322.52423.09274.25154.6112
H102.19531.10412.13422.68554.03315.16232.54423.09272.52421.79062.49083.0668
H112.19531.10412.13422.68554.03315.16232.54422.52423.09271.79063.06682.4908
H124.09972.70602.14061.10482.12173.20714.81874.61124.25152.49083.06681.7877
H134.09972.70602.14061.10482.12173.20714.81874.25154.61123.06682.49081.7877

picture of Ethoxyacetonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 105.446 C1 C2 H10 111.193
C1 C2 H11 111.193 C2 C1 H7 110.504
C2 C1 H8 109.384 C2 C1 H9 109.384
C2 O3 C4 110.499 O3 C2 H10 110.326
O3 C2 H11 110.326 O3 C4 C5 106.711
O3 C4 H12 111.538 O3 C4 H13 111.538
C4 C5 N6 179.710 C5 C4 H12 109.509
C5 C4 H13 109.509 H7 C1 H8 109.400
H7 C1 H9 109.400 H8 C1 H9 108.741
H10 C2 H11 108.358 H12 C4 H13 108.015
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability