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

using model chemistry: QCISD/6-31G*

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/6-31G*
 hartrees
Energy at 0K-322.811410
Energy at 298.15K-322.821273
HF Energy-321.859524
Nuclear repulsion energy246.363650
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/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 3584 3413 3.59      
2 A 3496 3330 0.03      
3 A 3422 3258 542.07      
4 A 3152 3002 7.48      
5 A 3114 2966 22.49      
6 A 3063 2917 7.29      
7 A 3048 2902 51.17      
8 A 1886 1796 319.01      
9 A 1718 1636 36.55      
10 A 1565 1491 4.72      
11 A 1521 1449 45.74      
12 A 1520 1447 282.56      
13 A 1456 1387 8.08      
14 A 1409 1342 4.97      
15 A 1355 1290 3.01      
16 A 1332 1268 16.80      
17 A 1283 1222 58.47      
18 A 1179 1122 6.12      
19 A 1116 1062 5.29      
20 A 1065 1014 21.10      
21 A 1006 958 37.15      
22 A 963 917 65.89      
23 A 918 874 49.00      
24 A 892 850 58.50      
25 A 831 791 12.27      
26 A 705 671 11.55      
27 A 581 554 4.56      
28 A 497 473 10.23      
29 A 404 385 16.38      
30 A 334 318 9.55      
31 A 283 270 5.83      
32 A 205 195 4.01      
33 A 87 83 0.51      

Unscaled Zero Point Vibrational Energy (zpe) 24493.4 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 23325.1 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/6-31G*
ABC
0.23856 0.08261 0.06568

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.934 0.568 0.136
C2 1.354 -0.689 -0.383
C3 0.024 -0.977 0.320
C4 -1.086 0.033 0.030
O5 -0.707 1.326 -0.039
O6 -2.245 -0.298 -0.107
H7 2.713 0.872 -0.448
H8 2.313 0.415 1.072
H9 2.027 -1.552 -0.267
H10 1.182 -0.554 -1.458
H11 -0.361 -1.960 0.031
H12 0.182 -1.001 1.410
H13 0.275 1.378 0.077

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N11.47772.46313.06912.75364.27471.01991.02112.15982.08963.41582.67421.8469
C21.47771.53162.57852.90303.63112.07012.06241.10091.09752.17482.16412.3762
C32.46311.53161.52952.44302.40723.35222.78242.16492.16341.09471.10132.3807
C43.06912.57851.52951.34861.21293.92003.57603.50672.77552.12182.14141.9141
O52.75362.90302.44301.34862.23723.47463.34463.97673.01963.30522.88220.9909
O64.27473.63112.40721.21292.23725.10564.76184.45563.69252.51682.94773.0321
H71.01992.07013.35223.92003.47465.10561.63642.52562.32374.20693.65542.5445
H81.02112.06242.78243.57603.34464.76181.63642.39662.93613.72492.58062.4634
H92.15981.10092.16493.50673.97674.45562.52562.39661.76932.44092.55273.4312
H102.08961.09752.16342.77553.01963.69252.32372.93611.76932.56403.06962.6292
H113.41582.17481.09472.12183.30522.51684.20693.72492.44092.56401.76493.3985
H122.67422.16411.10132.14142.88222.94773.65542.58062.55273.06961.76492.7284
H131.84692.37622.38071.91410.99093.03212.54452.46343.43122.62923.39852.7284

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 109.858 N1 C2 H9 112.959
N1 C2 H10 107.553 C2 N1 H7 110.622
C2 N1 H8 109.895 C2 C3 C4 114.776
C2 C3 H11 110.701 C2 C3 H12 109.470
C3 C2 H9 109.558 C3 C2 H10 109.640
C3 C4 O5 116.028 C3 C4 O6 122.329
C4 C3 H11 106.733 C4 C3 H12 107.862
C4 O5 H13 108.839 O5 C4 O6 121.629
H7 N1 H8 106.594 H9 C2 H10 107.183
H11 C3 H12 106.967
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability