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 C5H7N (Cyclobutanecarbonitrile)

using model chemistry: MP2=FULL/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 MP2=FULL/3-21G*
 hartrees
Energy at 0K-247.026699
Energy at 298.15K-247.034716
Nuclear repulsion energy208.222187
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=FULL/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3210 3043 27.25      
2 A' 3190 3024 5.65      
3 A' 3134 2971 3.62      
4 A' 3130 2967 12.20      
5 A' 3128 2965 7.11      
6 A' 2140 2028 1.51      
7 A' 1592 1509 1.02      
8 A' 1578 1496 5.27      
9 A' 1396 1323 0.71      
10 A' 1324 1255 3.60      
11 A' 1272 1205 0.22      
12 A' 1164 1103 1.81      
13 A' 1067 1012 0.05      
14 A' 946 897 0.30      
15 A' 916 868 2.48      
16 A' 752 713 1.71      
17 A' 600 569 0.75      
18 A' 539 511 1.47      
19 A' 296 281 0.64      
20 A' 143 135 2.29      
21 A" 3199 3033 11.64      
22 A" 3129 2966 26.14      
23 A" 1568 1487 2.70      
24 A" 1331 1262 3.37      
25 A" 1309 1241 0.46      
26 A" 1296 1229 0.36      
27 A" 1236 1172 1.36      
28 A" 1061 1006 0.29      
29 A" 940 891 1.15      
30 A" 901 854 1.46      
31 A" 819 777 1.28      
32 A" 563 533 0.13      
33 A" 198 188 2.75      

Unscaled Zero Point Vibrational Energy (zpe) 24532.6 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 23256.9 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 MP2=FULL/3-21G*
ABC
0.31866 0.07737 0.06832

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.666 2.128 0.000
C2 0.749 1.371 0.000
C3 -0.350 0.415 0.000
C4 -0.912 -1.711 0.000
C5 -0.350 -0.728 1.101
C6 -0.350 -0.728 -1.101
H7 -1.318 0.925 0.000
H8 -2.005 -1.709 0.000
H9 -0.533 -2.734 0.000
H10 0.679 -0.989 1.365
H11 -0.947 -0.553 1.996
H12 0.679 -0.989 -1.365
H13 -0.947 -0.553 -1.996

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13
N11.18902.64554.62463.66543.66543.21755.31005.33663.54314.24313.54314.2431
C21.18901.45663.50122.61282.61282.11504.13144.30062.72683.25042.72683.2504
C32.64551.45662.19901.58711.58711.09472.69223.15412.21152.29762.21152.2976
C44.62463.50122.19901.57941.57942.66731.09321.09052.21722.30812.21722.3081
C53.66542.61281.58711.57942.20222.20992.21662.29541.09321.09052.68483.1593
C63.66542.61281.58711.57942.20222.20992.21662.29542.68483.15931.09321.0905
H73.21752.11501.09472.66732.20992.20992.72143.74213.08432.51143.08432.5114
H85.31004.13142.69221.09322.21662.21662.72141.79363.09592.53743.09592.5374
H95.33664.30063.15411.09052.29542.29543.74211.79362.52592.98532.52592.9853
H103.54312.72682.21152.21721.09322.68483.08433.09592.52591.79782.73053.7594
H114.24313.25042.29762.30811.09053.15932.51142.53742.98531.79783.75943.9925
H123.54312.72682.21152.21722.68481.09323.08433.09592.52592.73053.75941.7978
H134.24313.25042.29762.30813.15931.09052.51142.53742.98533.75943.99251.7978

picture of Cyclobutanecarbonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 C3 178.548 C2 C3 C5 118.214
C2 C3 C6 118.214 C2 C3 H7 111.195
C3 C5 C4 87.968 C3 C5 H10 109.820
C3 C5 H11 116.984 C3 C6 C4 87.968
C3 C6 H12 109.820 C3 C6 H13 116.984
C4 C5 H10 110.806 C4 C5 H11 118.500
C4 C6 H12 110.806 C4 C6 H13 118.500
C5 C3 C6 87.857 C5 C3 H7 109.612
C5 C4 C6 88.398 C5 C4 H8 110.753
C5 C4 H9 117.401 C6 C3 H7 109.612
C6 C4 H8 110.753 C6 C4 H9 117.401
H8 C4 H9 110.442 H10 C5 H11 110.823
H12 C6 H13 110.823
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability