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	hartrees
Energy at 0K	-264.384443
Energy at 298.15K	-264.377531
Nuclear repulsion energy

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A	3421	3389	20.81
2	A	3324	3294	2.50
3	A	3270	3240	44.76
4	A	2944	2917	31.12
5	A	1719	1703	166.50
6	A	1677	1662	46.15
7	A	1367	1355	35.08
8	A	1197	1186	45.39
9	A	1139	1128	12.61
10	A	978	969	205.95
11	A	687	680	320.72
12	A	657	651	157.69
13	A	564	559	57.70
14	A	382	379	98.41
15	A	273	270	80.12
16	A	214	212	6.12
17	A	165	164	26.76
18	A	148	146	12.57

Atom	x (Å)	y (Å)	z (Å)
H1	1.668	0.508	-0.191
O2	2.179	-0.361	-0.094
O3	-0.194	1.038	0.011
H4	2.394	-0.388	0.890
H5	-0.977	1.677	0.030
C6	-0.689	-0.287	-0.015
O7	-1.882	-0.574	0.012
H8	0.226	-0.910	-0.065

	H1	O2	O3	H4	H5	C6	O7	H8
H1		1.0127	1.9457	1.5807	2.9001	2.4934	3.7163	2.0264
O2	1.0127		2.7560	1.0077	3.7586	2.8695	4.0674	2.0289
O3	1.9457	2.7560		3.0827	1.0111	1.4152	2.3343	1.9943
H4	1.5807	1.0077	3.0827		4.0457	3.2143	4.3688	2.4259
H5	2.9001	3.7586	1.0111	4.0457		1.9857	2.4258	2.8545
C6	2.4934	2.8695	1.4152	3.2143	1.9857		1.2272	1.1076
O7	3.7163	4.0674	2.3343	4.3688	2.4258	1.2272		2.1355
H8	2.0264	2.0289	1.9943	2.4259	2.8545	1.1076	2.1355

Number	Element	Mulliken
1	H	0.337
2	O	-0.616
3	O	-0.512
4	H	0.319
5	H	0.357
6	C	0.300
7	O	-0.421
8	H	0.236

All results from a given calculation for H₂OHCOOH (Water formic acid dimer 1)

using model chemistry: PBEPBEultrafine_cp/3-21G

States and conformations

	Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
	Home All data for one species Geometry Experimental Experimental Geometries Same bond/angle many molecules Internal Coordinates by type Bond angles Calculated Calculated geometry Rotational constant Moments of inertia Products of moments of inertia BSE Bond lengths Show me a calculated geometry Comparisons Bonds, angles Rotational Constants Products of moments of inertia Point group Bad Calculations Bad moment of inertia Tutorials and Explanations Angle formulas Vibrations Experimental Vibrational frequencies Calculated Frequencies Scale factors Reactions Entropies Ions List Ions Energy Calculated Ionization Energy Compare Ionzation energy Electron Affinity Calculated Electron affinity Compare Electron affinity Proton Affinity Calculated Proton affinity Compare Proton affinity Ionization changes point group Experimental One molecule all properties One property a few molecules Enthalpy of formation Entropy Integrated Heat Capacity Heat Capacity Rotational Constants Vibrational Frequencies Dipole moment Ionization Energy Polarizability Quadrupole Point Groups Geometry Experimental Geometries Internal Coordinates by type Bond angles Rotational Constants Point Groups Diatomic bond lengths Vibrations Vibrational frequencies Diatomic Triatomics Energy Atomization Energy Internal Rotation Electrostatics Dipole Quadrupole Polarizability Reference Data Reference states Spin Splittings Molecules with good enthalpy Enthalpy at 0 Kelvin Calculated Energy Optimized Energy Energy 298K Minimum conformation Hydrogen bonds H bond with counterpoise Reaction Reaction Energy 0K Reaction Energy 298K Internal Rotation Barriers to internal rotation Rotational barrier and dipole Rotational Barrier 2 molecules Orbital HOMO LUMO gap HOMO Orbital Energies Nuclear repulsion energy Correlation Full vs Frozen core energies Partial correlation energies Ion Calculated Ionization Energy Vertical ionization Energy Calculated Electron affinity Calculated Proton affinity Atom charge differences Excited State Singlet triplet gap Electronic state Transition state Basis Set Extrapolation BSE energy BSE Bond lengths Geometry Calculated geometry AIM bond orders One type of bond Rotation Rotational constant Products of moments of inertia Moments of inertia Inertial defects Second moments Point group State symmetry <r2> Sorted by r2 Z-matrix Bad Calculations Bad moment of inertia Bad Calculated Bond Lengths Bad point group Worst molecules Vibrations Frequencies Animated vibrations Anharmonic Zero point energy (ZPE) Scale Factors Scale factors Scale factor uncertainty Calculate a scale factor Why scale vibrations Set scaling factors Bad Calculations Bad Vib. 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Calc. vs exp. Bad Vib. HF vs MP2 Bad scale factors Low excited states Oddities NaCN Is not linear FAQ Help Units Choose Units Energy Bond length Rotational Constant Moment of Inertia Dipole and Quadrupole Polarizability Explanations Hartree cm-1 Debye Credits Just show me Show me a calculated geometry Summary Using older interface Limit Basis sets Method options List Recent molecules Choose a few Molecules Number of atoms By heavy atoms Diatomics InChI Deuterated Dimers Geometry Point group Point group count Bonds types Isodesmic reactions Bad point group Multiple conformers, states Vibrations Big anharmonicity Energy Enthalpy at 0 Kelvin Similar molecules Similar Isomers Cis/trans Tautomers Multiple conformers, states Ions, Dipoles, etc. List Ions Ionization changes point group Dipole Quadrupole Polarizability Proton Affinities Index of CCCBDB Feedback Error form Wants
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	x	y	z	Total
	0.404	2.434	1.509	2.892
CHELPG
AIM
ESP

	x	y	z
x	0.000	0.000	0.000
y	0.000	0.000	0.000
z	0.000	0.000	0.000

<r²>	0.000
(<r²>)^1/2	0.000

All results from a given calculation for H2OHCOOH (Water formic acid dimer 1)

using model chemistry: PBEPBEultrafine_cp/3-21G

States and conformations

All results from a given calculation for H₂OHCOOH (Water formic acid dimer 1)