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All results from a given calculation for NH2CH2CH2COOH (β–alanine)

using model chemistry: QCISD/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at QCISD/cc-pVDZ
 hartrees
Energy at 0K-322.897694
Energy at 298.15K-322.907587
Nuclear repulsion energy246.371561
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/cc-pVDZ
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 3590 3444 4.05      
2 A 3506 3364 16.27      
3 A 3476 3335 625.23      
4 A 3154 3026 8.93      
5 A 3109 2983 25.85      
6 A 3061 2936 8.82      
7 A 3043 2920 54.24      
8 A 1884 1807 336.01      
9 A 1656 1589 23.57      
10 A 1527 1465 226.16      
11 A 1513 1452 37.40      
12 A 1465 1405 8.54      
13 A 1434 1376 10.06      
14 A 1384 1328 13.91      
15 A 1332 1278 6.04      
16 A 1308 1254 21.80      
17 A 1267 1215 50.25      
18 A 1155 1108 6.49      
19 A 1108 1063 5.40      
20 A 1052 1009 14.58      
21 A 994 953 39.30      
22 A 959 920 53.91      
23 A 923 886 27.00      
24 A 884 848 40.75      
25 A 827 793 12.05      
26 A 703 675 9.54      
27 A 584 560 3.63      
28 A 492 472 9.58      
29 A 405 389 15.00      
30 A 332 318 7.44      
31 A 282 271 7.67      
32 A 208 199 3.99      
33 A 88 85 0.31      

Unscaled Zero Point Vibrational Energy (zpe) 24350.1 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 23361.5 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/cc-pVDZ
ABC
0.23843 0.08280 0.06578

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/cc-pVDZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.921 0.576 0.141
C2 1.360 -0.688 -0.383
C3 0.023 -0.985 0.313
C4 -1.090 0.035 0.029
O5 -0.698 1.322 -0.044
O6 -2.247 -0.290 -0.101
H7 2.721 0.866 -0.428
H8 2.295 0.415 1.081
H9 2.044 -1.551 -0.260
H10 1.191 -0.556 -1.467
H11 -0.362 -1.973 0.015
H12 0.181 -1.016 1.411
H13 0.280 1.346 0.075

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N11.47882.46413.06162.72934.26441.02291.02482.16832.09773.42532.67931.8135
C21.47881.53612.58722.89583.63962.06612.05711.10841.10572.18582.17122.3471
C32.46411.53611.53632.44332.41003.35482.77662.17542.17261.10191.10912.3570
C43.06162.58721.53631.34731.20913.92693.56463.52422.79172.13632.15121.8967
O52.72932.89582.44331.34732.23693.46983.32323.97703.01993.31292.89040.9855
O64.26443.63962.41001.20912.23695.11114.74594.47503.70942.52952.95073.0159
H71.02292.06613.35483.92693.46985.11111.63202.51612.33274.21503.65732.5372
H81.02482.05712.77663.56463.32324.74591.63202.39292.94193.72822.57392.4365
H92.16831.10842.17543.52423.97704.47502.51612.39291.78192.45842.55903.4078
H102.09771.10572.17262.79173.01993.70942.33272.94191.78192.57333.08492.6124
H113.42532.18581.10192.13633.31292.52954.21503.72822.45842.57331.77733.3813
H122.67932.17121.10912.15122.89042.95073.65732.57392.55903.08491.77732.7151
H131.81352.34712.35701.89670.98553.01592.53722.43653.40782.61243.38132.7151

picture of β–alanine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 C3 109.617 N1 C2 H9 113.109
N1 C2 H10 107.641 C2 N1 H7 110.018
C2 N1 H8 109.161 C2 C3 C4 114.713
C2 C3 H11 110.831 C2 C3 H12 109.266
C3 C2 H9 109.632 C3 C2 H10 109.569
C3 C4 O5 115.683 C3 C4 O6 122.310
C4 C3 H11 106.988 C4 C3 H12 107.720
C4 O5 H13 107.780 O5 C4 O6 121.999
H7 N1 H8 105.683 H9 C2 H10 107.184
H11 C3 H12 106.999
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability