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 CH3CH(CH3)ONO (Isopropyl nitrite)

using model chemistry: B1B95/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B1B95/6-31+G**
 hartrees
Energy at 0K-323.530588
Energy at 298.15K-323.539423
Nuclear repulsion energy243.883832
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 B1B95/6-31+G**
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 3161 3024 21.54      
2 A 3160 3023 13.25      
3 A 3155 3019 37.00      
4 A 3151 3014 0.17      
5 A 3082 2948 8.92      
6 A 3069 2936 12.31      
7 A 3066 2933 16.87      
8 A 1776 1699 274.90      
9 A 1507 1442 8.92      
10 A 1493 1429 8.64      
11 A 1484 1419 0.55      
12 A 1479 1415 0.79      
13 A 1418 1356 16.82      
14 A 1408 1347 23.64      
15 A 1366 1307 30.95      
16 A 1360 1301 2.26      
17 A 1205 1153 18.03      
18 A 1168 1118 9.20      
19 A 1168 1117 24.25      
20 A 986 944 7.06      
21 A 946 905 0.07      
22 A 931 891 1.08      
23 A 910 871 251.17      
24 A 865 828 360.98      
25 A 625 598 4.74      
26 A 486 465 1.24      
27 A 426 407 4.61      
28 A 321 307 0.95      
29 A 289 276 1.10      
30 A 222 212 0.92      
31 A 209 200 0.05      
32 A 183 175 0.37      
33 A 34 32 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 23055.0 cm-1
Scaled (by 0.9566) Zero Point Vibrational Energy (zpe) 22054.4 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 B1B95/6-31+G**
ABC
0.25165 0.07091 0.06011

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31+G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.548 0.000 -1.364
C2 0.810 0.000 -0.301
H3 2.509 1.307 -0.479
H4 1.765 1.303 1.129
H5 0.975 2.152 -0.211
C6 1.558 1.269 0.057
H7 2.510 -1.306 -0.479
H8 0.976 -2.152 -0.212
H9 1.766 -1.303 1.129
C10 1.558 -1.269 0.057
O11 -0.441 -0.000 0.428
O12 -2.548 -0.000 0.156
N13 -1.527 0.000 -0.437

Atom - Atom Distances (Å)
  H1 C2 H3 H4 H5 C6 H7 H8 H9 C10 O11 O12 N13
H11.09512.51793.06552.47892.15632.51792.47893.06552.15642.04703.44882.2732
C21.09512.15142.15792.16071.51592.15142.16072.15791.51591.44813.38852.3412
H32.51792.15141.77201.77211.09282.61323.79343.15452.79753.35255.26184.2432
H43.06552.15791.77201.77261.09283.15453.78972.60622.79432.65714.60933.8716
H52.47892.16071.77211.77261.09173.79344.30493.78973.48092.65524.14483.3083
C62.15631.51591.09281.09281.09172.79753.48092.79432.53782.39704.29823.3720
H72.51792.15142.61323.15453.79342.79751.77211.77201.09283.35245.26214.2438
H82.47892.16073.79343.78974.30493.48091.77211.77261.09172.65514.14543.3095
H93.06552.15793.15452.60623.78972.79431.77201.77261.09282.65714.60963.8722
C102.15641.51592.79752.79433.48092.53781.09281.09171.09282.39704.29863.3727
O112.04701.44813.35252.65712.65522.39703.35242.65512.65712.39702.12361.3878
O123.44883.38855.26184.60934.14484.29825.26214.14544.60964.29862.12361.1799
N132.27322.34124.24323.87163.30833.37204.24383.30953.87223.37271.38781.1799

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 110.318 H1 C2 C10 110.318
H1 C2 O11 106.374 C2 C6 H3 110.060
C2 C6 H4 110.578 C2 C6 H5 110.868
C2 C10 H7 110.060 C2 C10 H8 110.868
C2 C10 H9 110.578 C2 O11 N13 111.271
H3 C6 H4 108.344 H3 C6 H5 108.434
H4 C6 H5 108.483 C6 C2 C10 113.668
C6 C2 O11 107.924 H7 C10 H8 108.434
H7 C10 H9 108.344 H8 C10 H9 108.483
C10 C2 O11 107.919 O11 N13 O12 111.338
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.166      
2 C 0.094      
3 H 0.164      
4 H 0.175      
5 H 0.173      
6 C -0.520      
7 H 0.164      
8 H 0.173      
9 H 0.175      
10 C -0.520      
11 O -0.024      
12 O -0.023      
13 N -0.195      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  3.046 0.001 -0.855 3.164
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.518 -0.001 0.256
y -0.001 -34.866 0.002
z 0.256 0.002 -37.399
Traceless
 xyz
x -3.385 -0.001 0.256
y -0.001 3.593 0.002
z 0.256 0.002 -0.208
Polar
3z2-r2-0.415
x2-y2-4.652
xy-0.001
xz0.256
yz0.002


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.682 0.000 0.009
y 0.000 7.035 -0.000
z 0.009 -0.000 6.677


<r2> (average value of r2) Å2
<r2> 191.117
(<r2>)1/2 13.824