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 C4H5N ((Z)-2-Butenenitrile)

using model chemistry: B2PLYP/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B2PLYP/6-31G*
 hartrees
Energy at 0K-209.919745
Energy at 298.15K-209.924287
HF Energy-209.695739
Nuclear repulsion energy141.351721
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 B2PLYP/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' 3238 3073 4.86      
2 A' 3208 3045 10.07      
3 A' 3179 3017 3.08      
4 A' 3078 2922 9.87      
5 A' 2280 2164 5.86      
6 A' 1711 1624 10.30      
7 A' 1531 1453 13.67      
8 A' 1469 1394 4.89      
9 A' 1432 1359 1.74      
10 A' 1284 1219 0.23      
11 A' 1147 1089 0.62      
12 A' 984 934 12.41      
13 A' 917 870 1.35      
14 A' 668 634 1.72      
15 A' 397 377 0.11      
16 A' 159 151 4.65      
17 A" 3136 2977 11.80      
18 A" 1530 1452 8.26      
19 A" 1092 1037 0.22      
20 A" 990 939 0.54      
21 A" 757 719 38.10      
22 A" 527 500 1.23      
23 A" 287 272 3.18      
24 A" 154 146 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 17575.8 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 16682.9 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 B2PLYP/6-31G*
ABC
0.39920 0.11505 0.09081

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.178 0.298 0.000
N2 -2.192 -0.278 0.000
C3 0.000 0.977 0.000
H4 -0.031 2.033 0.000
C5 1.213 0.371 0.000
H6 2.067 0.992 0.000
C7 1.434 -1.091 0.000
H8 0.493 -1.642 0.000
H9 2.001 -1.387 0.884
H10 2.001 -1.387 -0.884

Atom - Atom Distances (Å)
  C1 N2 C3 H4 C5 H6 C7 H8 H9 H10
C11.16601.35962.07942.39193.31802.95782.56003.70523.7052
N21.16602.52573.16343.46604.44383.71543.01124.42664.4266
C31.35962.52571.05581.35592.06682.51622.66473.22103.2210
H42.07943.16341.05582.07552.34163.44953.71124.07464.0746
C52.39193.46601.35592.07551.05571.47832.13762.11962.1196
H63.31804.44382.06682.34161.05572.17673.06802.53832.5383
C72.95783.71542.51623.44951.47832.17671.09031.09171.0917
H82.56003.01122.66473.71122.13763.06801.09031.76721.7672
H93.70524.42663.22104.07462.11962.53831.09171.76721.7685
H103.70524.42663.22104.07462.11962.53831.09171.76721.7685

picture of (Z)-2-Butenenitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 H4 118.285 C1 C3 C5 123.484
N2 C1 C3 179.635 C3 C5 H6 117.424
C3 C5 C7 125.140 H4 C3 C5 118.231
C5 C7 H8 111.766 C5 C7 H9 110.221
C5 C7 H10 110.221 H6 C5 C7 117.436
H8 C7 H9 108.173 H8 C7 H10 108.173
H9 C7 H10 108.180
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.306      
2 N -0.481      
3 C -0.182      
4 H 0.208      
5 C -0.074      
6 H 0.179      
7 C -0.519      
8 H 0.199      
9 H 0.182      
10 H 0.182      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.740 0.010 0.000
y 0.010 6.166 0.000
z 0.000 0.000 3.614


<r2> (average value of r2) Å2
<r2> 126.461
(<r2>)1/2 11.245