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	hartrees
Energy at 0K	-115.485180
Energy at 298.15K
HF Energy	-115.218611
Nuclear repulsion energy	59.054990

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3189	2979	0.00
2	A₁	1578	1475	0.00
3	A₁	1131	1057	0.00
4	B₁	926	865	0.00
5	B₂	3186	2977	2.61
6	B₂	2088	1951	28.00
7	B₂	1539	1438	2.20
8	E	3257	3043	4.67
8	E	3257	3043	4.67
9	E	1116	1043	0.35
9	E	1116	1043	0.35
10	E	962	899	66.73
10	E	962	899	66.73
11	E	349	326	5.67
11	E	349	326	5.67

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	0.000
C2	0.000	0.000	1.310
C3	0.000	0.000	-1.310
H4	0.000	0.923	1.880
H5	0.000	-0.923	1.880
H6	0.923	0.000	-1.880
H7	-0.923	0.000	-1.880

	C1	C2	C3	H4	H5	H6	H7
C1		1.3100	1.3100	2.0941	2.0941	2.0941	2.0941
C2	1.3100		2.6201	1.0849	1.0849	3.3206	3.3206
C3	1.3100	2.6201		3.3206	3.3206	1.0849	1.0849
H4	2.0941	1.0849	3.3206		1.8469	3.9794	3.9794
H5	2.0941	1.0849	3.3206	1.8469		3.9794	3.9794
H6	2.0941	3.3206	1.0849	3.9794	3.9794		1.8469
H7	2.0941	3.3206	1.0849	3.9794	3.9794	1.8469

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	H4	121.661	C1	C2	H5	121.661
C1	C3	H6	121.661	C1	C3	H7	121.661
C2	C1	C3	180.000	H4	C2	H5	116.677
H6	C3	H7	116.677

All results from a given calculation for CH₂CCH₂ (allene)

using model chemistry: CISD/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
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All results from a given calculation for CH2CCH2 (allene)

using model chemistry: CISD/3-21G*

States and conformations

All results from a given calculation for CH₂CCH₂ (allene)