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Bad Calculated Bond Lengths

List of molecules with calculated bond lengths that differ by more than 0.050 Å from experimental bond lengths.

Calculated at MP4=FULL/Def2TZVPP

Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
ONNO NO dimer rNN 2.236 3.693 1.457
CH3CH2SH ethanethiol rCH 1.095 1.825 0.730
S4 Sulfur tetramer rSS 2.155 2.853 0.698
S4 Sulfur tetramer rSS 2.155 2.602 0.447
S4 Sulfur tetramer rSS 2.155 2.601 0.446
CH3CH2SH ethanethiol rCH 1.089 1.524 0.435
CH3CH2SH ethanethiol rCH 1.092 1.524 0.432
C2H4F2 1,2-difluoroethane rCH 1.093 1.514 0.421
C2H4F2 1,2-difluoroethane rCH 1.093 1.503 0.410
CaO Calcium monoxide rOCa 1.822 2.226 0.404
CH2CHCH2F Allyl Fluoride rHC 1.130 1.495 0.365
CH3CH2SH ethanethiol rCC 1.528 1.825 0.297
CH3CH2SH ethanethiol rCS 1.820 1.524 -0.296
C2H2+ acetylene cation rCH 1.077 1.314 0.237
S4 Sulfur tetramer rSS 1.898 2.118 0.220
S3 Sulfur trimer rSS 1.917 2.087 0.170
SiP Silicon monophosphide rSiP 2.078 2.002 -0.075
C2H2+ acetylene cation rCC 1.253 1.324 0.072
CaS Calcium sulfide rSCa 2.318 2.377 0.060
HCF Fluoromethylene rCH 1.138 1.083 -0.055
20 molecules.