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: G2

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at G2
 hartrees
Energy at 0K-286.088499
Energy at 298.15K-286.096994
HF Energy-284.833407
Nuclear repulsion energy217.764841
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 HF/6-31G*
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' 3285 3096 37.77      
2 A' 3218 3032 19.69      
3 A' 3204 3019 40.55      
4 A' 3178 2994 39.19      
5 A' 2630 2478 2.55      
6 A' 1684 1586 1.78      
7 A' 1657 1561 2.51      
8 A' 1644 1549 3.25      
9 A' 1607 1514 6.83      
10 A' 1562 1472 42.01      
11 A' 1533 1444 83.69      
12 A' 1303 1228 245.84      
13 A' 1265 1192 31.72      
14 A' 1138 1072 18.85      
15 A' 1029 969 25.37      
16 A' 974 918 0.73      
17 A' 610 575 2.01      
18 A' 451 425 1.56      
19 A' 330 311 3.22      
20 A' 144 136 4.05      
21 A" 3298 3108 39.76      
22 A" 3240 3053 32.55      
23 A" 3210 3024 58.70      
24 A" 1628 1534 3.90      
25 A" 1430 1348 4.43      
26 A" 1394 1313 3.18      
27 A" 1303 1227 8.32      
28 A" 1146 1079 3.19      
29 A" 891 840 0.04      
30 A" 419 395 3.80      
31 A" 271 255 0.63      
32 A" 119 112 8.79      
33 A" 79 75 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 25438.0 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 23967.7 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=FULL/6-31G*
ABC
0.51150 0.05003 0.04678

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.962 2.524 0.000
C2 -1.254 1.042 0.000
O3 0.000 0.361 0.000
C4 -0.181 -1.039 0.000
C5 1.143 -1.670 0.000
N6 2.191 -2.209 0.000
H7 -1.894 3.095 0.000
H8 -0.385 2.793 0.886
H9 -0.385 2.793 -0.886
H10 -1.836 0.753 -0.888
H11 -1.836 0.753 0.888
H12 -0.738 -1.375 -0.888
H13 -0.738 -1.375 0.888

Atom - Atom Distances (Å)
  C1 C2 O3 C4 C5 N6 H7 H8 H9 H10 H11 H12 H13
C11.51042.36683.64684.69245.68661.09311.09131.09132.16552.16554.00464.0046
C21.51041.42732.34103.61974.73712.15012.14662.14661.10031.10032.62602.6260
O32.36681.42731.41142.33073.37733.32562.61672.61672.07672.07672.08482.0848
C43.64682.34101.41141.46692.64544.47413.93793.93792.59532.59531.10071.1007
C54.69243.61972.33071.46691.17885.65034.79984.79983.94103.94102.10062.1006
N65.68664.73713.37732.64541.17886.69445.69545.69545.07715.07713.17243.1724
H71.09312.15013.32564.47415.65036.69441.77601.77602.50552.50554.70124.7012
H81.09132.14662.61673.93794.79985.69541.77601.77273.06882.50364.54344.1825
H91.09132.14662.61673.93794.79985.69541.77601.77272.50363.06884.18254.5434
H102.16551.10032.07672.59533.94105.07712.50553.06882.50361.77652.39412.9811
H112.16551.10032.07672.59533.94105.07712.50552.50363.06881.77652.98112.3941
H124.00462.62602.08481.10072.10063.17244.70124.54344.18252.39412.98111.7763
H134.00462.62602.08481.10072.10063.17244.70124.18254.54342.98112.39411.7763

picture of Ethoxyacetonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 108.185 C1 C2 H10 110.776
C1 C2 H11 110.776 C2 C1 H7 110.267
C2 C1 H8 110.412 C2 C1 H9 110.412
C2 O3 C4 113.994 O3 C2 H10 109.719
O3 C2 H11 109.719 O3 C4 C5 108.896
O3 C4 H12 111.803 O3 C4 H13 111.803
C4 C5 N6 178.126 C5 C4 H12 108.125
C5 C4 H13 108.125 H7 C1 H8 108.647
H7 C1 H9 108.647 H8 C1 H9 108.399
H10 C2 H11 107.664 H12 C4 H13 107.960
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability