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

AM1 for rPH

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

Differences greater than 0.010 are in the 0.010 bin. Differences less than -0.110 are in the -0.110 bin.

	10
	8
	6
	4
	2
	0
		-0.110			-0.100			-0.090			-0.080			-0.070			-0.060			-0.050			-0.040			-0.030			-0.020			-0.010			0.000			0.010
bond length difference calc. - exp. (Å)

	Species	Name	Difference (Å)
Most negative difference	PH+	phosphorus monohydride cation	-0.103
Most positive difference	CH2PH	Phosphaethene	-0.049

Bond lengths
Click on entry for experimental details.

Species	Name	Experimental (Å)	Difference (Å)
PH+	phosphorus monohydride cation	1.435	-0.103
PH	phosphorus monohydride	1.422	-0.070
PH	phosphorus monohydride	1.422	-0.069
PH3	Phosphine	1.421	-0.058
PH3	Phosphine	1.421	-0.055
CH2PH	Phosphaethene	1.420	-0.049