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All results from a given calculation for NH2COOC2H5 (Urethane)

using model chemistry: MP2/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/CEP-31G
 hartrees
Energy at 0K-62.022348
Energy at 298.15K-62.031111
HF Energy-61.463242
Nuclear repulsion energy133.372629
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/CEP-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 3792 3665 41.78      
2 A 3636 3514 42.81      
3 A 3176 3069 51.25      
4 A 3152 3046 44.56      
5 A 3113 3008 47.16      
6 A 3051 2948 34.22      
7 A 3036 2934 50.92      
8 A 1711 1654 354.54      
9 A 1658 1602 216.19      
10 A 1540 1488 1.95      
11 A 1526 1474 6.87      
12 A 1508 1457 6.54      
13 A 1460 1411 10.09      
14 A 1422 1374 18.57      
15 A 1305 1261 0.73      
16 A 1299 1255 402.43      
17 A 1174 1134 5.02      
18 A 1150 1111 4.61      
19 A 1079 1043 44.35      
20 A 1055 1019 98.15      
21 A 959 927 72.39      
22 A 858 829 0.42      
23 A 793 766 30.56      
24 A 683 660 28.58      
25 A 539 521 3.19      
26 A 519 502 161.58      
27 A 515 497 6.26      
28 A 363 350 0.90      
29 A 332 321 226.49      
30 A 241 232 0.05      
31 A 204 197 3.44      
32 A 99 96 0.41      
33 A 54 52 0.91      

Unscaled Zero Point Vibrational Energy (zpe) 23500.6 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 22708.6 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 MP2/CEP-31G
ABC
0.27483 0.06589 0.05428

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.639 -0.268 0.000
H2 -2.710 -0.908 0.901
H3 -3.486 0.453 -0.000
H4 -2.710 -0.909 -0.901
C5 -1.292 0.505 -0.000
H6 -1.183 1.133 -0.911
H7 -1.183 1.134 0.911
O8 -0.218 -0.548 0.000
N9 1.440 1.201 0.000
H10 0.732 1.928 -0.000
H11 2.422 1.467 0.000
C12 1.160 -0.183 0.000
O13 2.051 -1.081 -0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 O8 N9 H10 H11 C12 O13
C11.10791.11191.10791.55232.21622.21612.43654.33464.02245.35003.79974.7595
H21.10791.80731.80172.19523.12792.54942.67384.74114.54985.72654.03914.8484
H31.11191.80731.80732.19402.56802.56813.41734.98204.46805.99464.68925.7451
H41.10791.80171.80732.19522.54973.12782.67364.74124.54995.72664.03904.8481
C51.55232.19522.19402.19521.11231.11231.50442.81932.47413.83732.54723.7003
H62.21623.12792.56802.54971.11231.82242.14252.77782.26473.73422.83834.0242
H72.21612.54942.56813.12781.11231.82242.14252.77772.26463.73402.83834.0243
O82.43652.67383.41732.67361.50442.14252.14252.40982.65233.32181.42602.3309
N94.33464.74114.98204.74122.81932.77782.77772.40981.01551.01811.41152.3617
H104.02244.54984.46804.54992.47412.26472.26462.65231.01551.75272.15433.2856
H115.35005.72655.99465.72663.83733.73423.73403.32181.01811.75272.07742.5747
C123.79974.03914.68924.03902.54722.83832.83831.42601.41152.15432.07741.2647
O134.75954.84845.74514.84813.70034.02424.02432.33092.36173.28562.57471.2647

picture of Urethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 H6 111.487 C1 C5 H7 111.480
C1 C5 O8 105.706 H2 C1 H3 109.014
H2 C1 H4 108.806 H2 C1 C5 110.100
H3 C1 H4 109.014 H3 C1 C5 109.777
H4 C1 C5 110.101 C5 O8 C12 120.720
H6 C5 H7 110.015 H6 C5 O8 109.005
H7 C5 O8 109.009 O8 C12 N9 116.268
O8 C12 O13 119.935 N9 C12 O13 123.797
H10 N9 H11 119.056 H10 N9 C12 124.347
H11 N9 C12 116.597
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability