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All results from a given calculation for C4H5N ((Z)-2-Butenenitrile)

using model chemistry: QCISD/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD/3-21G
 hartrees
Energy at 0K-208.147662
Energy at 298.15K-208.152281
HF Energy-207.640418
Nuclear repulsion energy140.335394
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 QCISD/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 3168 3071 7.01      
2 A 3138 3042 7.20      
3 A 3106 3010 5.52      
4 A 3028 2934 9.70      
5 A 2278 2208 0.97      
6 A 1676 1625 1.04      
7 A 1564 1516 9.99      
8 A 1481 1435 8.40      
9 A 1458 1413 0.21      
10 A 1304 1264 0.62      
11 A 1151 1115 1.80      
12 A 954 925 8.98      
13 A 868 841 1.02      
14 A 689 667 0.60      
15 A 420 407 0.03      
16 A 171 165 3.34      
17 A 3080 2985 13.61      
18 A 1565 1517 8.41      
19 A 1119 1085 0.03      
20 A 993 962 0.98      
21 A 781 757 39.58      
22 A 554 537 6.46      
23 A 295 286 1.79      
24 A 137 133 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 17488.6 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 16949.9 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 QCISD/3-21G
ABC
0.38846 0.11408 0.08968

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.232 0.250 0.000
N2 -2.230 -0.371 0.000
C3 0.000 1.007 0.000
H4 -0.109 2.091 0.000
C5 1.222 0.433 0.000
H6 2.097 1.086 0.000
C7 1.495 -1.066 0.000
H8 0.556 -1.635 0.000
H9 2.078 -1.345 0.890
H10 2.078 -1.345 -0.890

Atom - Atom Distances (Å)
  C1 N2 C3 H4 C5 H6 C7 H8 H9 H10
C11.17511.44562.15632.46023.43183.02742.59753.78073.7807
N21.17512.62073.24903.54374.56493.78883.05884.50564.5056
C31.44562.62071.08961.34942.09812.55512.69903.26233.2623
H42.15633.24901.08962.12542.42353.54043.78424.16924.1692
C52.46023.54371.34942.12541.09171.52362.17252.16552.1655
H63.43184.56492.09812.42351.09172.23423.12672.58932.5893
C73.02743.78882.55513.54041.52362.23421.09801.10031.1003
H82.59753.05882.69903.78422.17253.12671.09801.78711.7871
H93.78074.50563.26234.16922.16552.58931.10031.78711.7799
H103.78074.50563.26234.16922.16552.58931.10031.78711.7799

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 115.827 C1 C3 C5 123.299
N2 C1 C3 179.686 C3 C5 H6 118.137
C3 C5 C7 125.471 H4 C3 C5 120.874
C5 C7 H8 110.879 C5 C7 H9 110.196
C5 C7 H10 110.196 H6 C5 C7 116.392
H8 C7 H9 108.766 H8 C7 H10 108.766
H9 C7 H10 107.966
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability