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All results from a given calculation for CH3CH(CH3)ONO (Isopropyl nitrite)

using model chemistry: MP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-320.589824
Energy at 298.15K-320.598483
HF Energy-319.916190
Nuclear repulsion energy235.979246
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 MP2/3-21G
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 3178 3034 26.57      
2 A 3174 3029 10.54      
3 A 3170 3026 29.23      
4 A 3166 3022 3.42      
5 A 3102 2960 7.05      
6 A 3093 2952 8.24      
7 A 3090 2950 11.24      
8 A 1607 1534 10.41      
9 A 1597 1524 6.38      
10 A 1589 1517 1.22      
11 A 1585 1513 0.68      
12 A 1498 1429 5.55      
13 A 1480 1413 10.24      
14 A 1439 1374 10.73      
15 A 1397 1333 20.27      
16 A 1265 1208 6.85      
17 A 1191 1137 11.80      
18 A 1183 1129 12.03      
19 A 1168 1115 25.63      
20 A 1002 956 1.45      
21 A 974 930 0.01      
22 A 943 900 42.68      
23 A 859 820 18.41      
24 A 799 762 517.48      
25 A 551 526 13.14      
26 A 477 455 1.51      
27 A 400 382 6.20      
28 A 316 302 1.28      
29 A 282 270 1.36      
30 A 230 220 0.01      
31 A 211 202 1.87      
32 A 160 153 0.36      
33 A 7 6 0.32      

Unscaled Zero Point Vibrational Energy (zpe) 23090.7 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 22040.1 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 MP2/3-21G
ABC
0.24166 0.06591 0.05660

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.548 -0.000 -1.366
C2 0.842 0.000 -0.310
H3 2.541 1.341 -0.511
H4 1.813 1.298 1.118
H5 0.987 2.161 -0.201
C6 1.599 1.288 0.045
H7 2.555 -1.320 -0.516
H8 1.012 -2.159 -0.205
H9 1.831 -1.290 1.115
C10 1.614 -1.280 0.042
O11 -0.414 -0.009 0.508
O12 -2.664 -0.002 0.147
N13 -1.570 0.002 -0.477

Atom - Atom Distances (Å)
  H1 C2 H3 H4 H5 C6 H7 H8 H9 C10 O11 O12 N13
H11.09612.54893.07492.49382.18032.54802.49473.07542.18052.10633.55082.2972
C21.09612.17342.16042.16831.53552.17312.16832.16071.53551.49883.53562.4176
H32.54892.17341.78491.78411.09512.66133.83153.17282.83403.40485.41534.3232
H43.07492.16041.78491.77941.09413.17493.78752.58802.80072.65424.76243.9585
H52.49382.16831.78411.77941.09413.83134.31993.78773.50572.67854.25783.3576
C62.18031.53551.09511.09411.09412.83443.50562.80022.56782.43934.45513.4595
H72.54802.17312.66133.17493.83132.83441.78421.78481.09513.40405.42394.3322
H82.49472.16833.83153.78754.31993.50561.78421.77941.09402.67624.27613.3775
H93.07542.16073.17282.58803.78772.80021.78481.77941.09412.65474.77433.9703
C102.18051.53552.83402.80073.50572.56781.09511.09401.09412.43844.46603.4712
O112.10631.49883.40482.65422.67852.43933.40402.67622.65472.43842.27831.5180
O123.55083.53565.41534.76244.25784.45515.42394.27614.77434.46602.27831.2595
N132.29722.41764.32323.95853.35763.45954.33223.37753.97033.47121.51801.2595

picture of Isopropyl nitrite state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C2 C6 110.786 H1 C2 C10 110.803
H1 C2 O11 107.509 C2 C6 H3 110.298
C2 C6 H4 109.334 C2 C6 H5 109.958
C2 C10 H7 110.272 C2 C10 H8 109.958
C2 C10 H9 109.359 C2 O11 N13 106.523
H3 C6 H4 109.239 H3 C6 H5 109.170
H4 C6 H5 108.815 C6 C2 C10 113.470
C6 C2 O11 107.004 H7 C10 H8 109.180
H7 C10 H9 109.229 H8 C10 H9 108.818
C10 C2 O11 106.945 O11 N13 O12 109.876
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.200     -0.131
2 C -0.010     0.699
3 H 0.183     0.121
4 H 0.200     0.117
5 H 0.196     0.139
6 C -0.530     -0.516
7 H 0.183     0.121
8 H 0.196     0.139
9 H 0.200     0.116
10 C -0.530     -0.514
11 O -0.373     -0.309
12 O -0.219     -0.093
13 N 0.304     0.112


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.944 0.011 -1.030 2.200
CHELPG        
AIM        
ESP 1.820 0.011 -1.089 2.121


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.369 -0.011 0.554
y -0.011 -35.465 0.025
z 0.554 0.025 -37.646
Traceless
 xyz
x -1.814 -0.011 0.554
y -0.011 2.543 0.025
z 0.554 0.025 -0.729
Polar
3z2-r2-1.458
x2-y2-2.904
xy-0.011
xz0.554
yz0.025


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.266 -0.003 0.004
y -0.003 5.251 -0.003
z 0.004 -0.003 5.064


<r2> (average value of r2) Å2
<r2> 201.378
(<r2>)1/2 14.191