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: CCD/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 CCD/6-31G*
 hartrees
Energy at 0K-209.497852
Energy at 298.15K-209.502373
HF Energy-208.806604
Nuclear repulsion energy141.232519
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 CCD/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 3065 4.02      
2 A' 3201 3030 10.74      
3 A' 3177 3007 3.69      
4 A' 3078 2913 10.04      
5 A' 2369 2243 1.76      
6 A' 1757 1663 2.24      
7 A' 1540 1457 9.98      
8 A' 1482 1403 5.20      
9 A' 1441 1364 2.19      
10 A' 1294 1225 0.20      
11 A' 1155 1093 0.32      
12 A' 991 938 11.41      
13 A' 924 874 1.20      
14 A' 669 633 1.59      
15 A' 400 379 0.20      
16 A' 162 153 4.74      
17 A" 3143 2975 12.30      
18 A" 1534 1452 8.50      
19 A" 1103 1044 0.67      
20 A" 984 931 0.27      
21 A" 756 715 40.54      
22 A" 513 485 1.20      
23 A" 280 265 3.19      
24 A" 144 137 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 17666.7 cm-1
Scaled (by 0.9465) Zero Point Vibrational Energy (zpe) 16721.6 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 CCD/6-31G*
ABC
0.39603 0.11523 0.09077

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.221 0.229 0.000
N2 -2.235 -0.346 0.000
C3 0.000 0.995 0.000
H4 -0.110 2.077 0.000
C5 1.214 0.421 0.000
H6 2.077 1.086 0.000
C7 1.496 -1.052 0.000
H8 0.574 -1.642 0.000
H9 2.086 -1.328 0.883
H10 2.086 -1.328 -0.883

Atom - Atom Distances (Å)
  C1 N2 C3 H4 C5 H6 C7 H8 H9 H10
C11.16571.44122.15552.44253.40813.00382.59323.76123.7612
N21.16572.60633.22253.53294.54403.79643.09314.51844.5184
C31.44122.60631.08741.34252.07952.53492.69833.24493.2449
H42.15553.22251.08742.11982.40133.51653.78084.14714.1471
C52.44253.53291.34252.11981.09031.49972.15972.14512.1451
H63.40814.54402.07952.40131.09032.21613.11502.57112.5711
C73.00383.79642.53493.51651.49972.21611.09411.09761.0976
H82.59323.09312.69833.78082.15973.11501.09411.77891.7789
H93.76124.51843.24494.14712.14512.57111.09761.77891.7653
H103.76124.51843.24494.14712.14512.57111.09761.77891.7653

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 116.257 C1 C3 C5 122.628
N2 C1 C3 177.528 C3 C5 H6 117.092
C3 C5 C7 126.129 H4 C3 C5 121.115
C5 C7 H8 111.792 C5 C7 H9 110.401
C5 C7 H10 110.401 H6 C5 C7 116.780
H8 C7 H9 108.517 H8 C7 H10 108.517
H9 C7 H10 107.065
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability