National Institute of Standards and Technology

Computational Chemistry Comparison and Benchmark DataBase
Release 22	May 2022
NIST Standard Reference Database 101

I	Introduction
II	Experimental data
III	Calculated data
IV	Data comparisons
V	Cost comparisons
VI	Input and output files
VII	Tutorials and Units
VIII	Links to other sites
IX	Feedback
X	Older CCCBDB versions
XII	Geometries
XIII	Vibrations
XIV	Reaction data
XV	Entropy data
XVI	Bibliographic data
XVII	Ion data
XVIII	Bad calculations
XIX	Index of properties
XX	H-bond dimers
XXI	Oddities

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IV.D.4. (XII.A.2.)

Compare Bonds

18 10 19 16 31

MP3=FULL/6-31G* for rPH

Histogram of Bond length differences (in Å) vs number of species

Differences greater than 0.050 are in the 0.050 bin. Differences less than -0.010 are in the -0.010 bin.

	10
	8
	6
	4
	2
	0
		-0.010			-0.005			0.000			0.005			0.010			0.015			0.020			0.025			0.030			0.035			0.040			0.045			0.050
bond length difference calc. - exp. (Å)

	Species	Name	Difference (Å)
Most negative difference	PH+	phosphorus monohydride cation	-0.007
Most positive difference	HPO	Hydrogen phosphorus oxide	0.024

Bond lengths
Click on entry for experimental details.

Species	Name	Experimental (Å)	Difference (Å)
PH+	phosphorus monohydride cation	1.435	-0.007
PH2	Phosphino radical	1.428	-0.003
CH3PH2	Methyl phosphine	1.423	-0.002
PH3	Phosphine	1.421	-0.001
P2H4	Diphosphine	1.417	0.003
P2H4	Diphosphine	1.414	0.005
CH2PH	Phosphaethene	1.420	0.007
PH	phosphorus monohydride	1.422	0.009
PH	phosphorus monohydride	1.422	0.011
HPO	Hydrogen phosphorus oxide	1.433	0.024