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Section: 9 | Bond Lengths in Organometallic Compounds |
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The recommended form of citation is:
John R. Rumble, ed., CRC Handbook of Chemistry and Physics, 103rd Edition (Internet Version 2022), CRC Press/Taylor & Francis, Boca Raton, FL.
If a specific table is cited, use the format: "Physical Constants of Organic Compounds," in CRC Handbook of Chemistry and Physics, 103rd Edition (Internet Version 2022), John R. Rumble, ed., CRC Press/Taylor & Francis, Boca Raton, FL.

BOND LENGTHS IN ORGANOMETALLIC COMPOUNDS

These tables contain average values of interatomic distances of representative metal–ligand bonds. Sigma bonds between d- and f-block metals and carbon are given in Table 1. Sigma bond lengths between d- and f-block metals and the elements N, O, P, S, and As are given in Table 2. The values are extracted from a much larger list in Ref. 1. The tabulated values are the unweighted means of reported measurements on compounds in each category. If four or more measurements are available, the standard deviation is given in parentheses. All values are in angströms (10–10 m).

Column definitions for Table 1 are as follows.

Column heading Definition
M Atomic symbol for metal; metals are listed in atomic number order
d(M–CH3) Metal–carbon bond length, in Å
d(M–CH2R) Metal–carbon bond length, in Å; R stands for any alkyl group
d(M–CR=CR2) Metal–carbon bond length, in Å; R stands for any alkyl group
d(M–C6R5) Metal–carbon bond length, in Å; C6R5 indicates an aryl group
d(M–C(=O)R) Metal–carbon bond length, in Å; C(=O)R is an acyl group

Column definitions for Table 2 are as follows.

Column heading Definition
M Atomic symbol for metal; metals are listed in atomic number order
d(M–NH3) Metal–nitrogen bond length, in Å
d(M–OH2) Metal–oxygen bond length, in Å
d(M–P(CH3)3) Metal–phosphorus bond length, in Å
d(M–SR) Metal–sulfur bond length, in Å; R stands for any alkyl group
d(M–AsR3) Metal–arsenic bond length, in Å; R stands for any alkyl group

Reference

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TABLE 1. Metal-Carbon Bond Lengths



Md(M–CH3)/Åd(M–CH2R)/Åd(M–CR=CR2)/Åd(M–C6R5)/Åd(M–C(=O)R)/Å
Continued on next page...
Ti2.1672.215(0.042)2.148
V2.114(0.012)
Cr2.1682.035(0.009)2.075(0.019)
Mn2.095(0.030)2.176(0.024)2.0072.064(0.021)2.044
Fe2.0742.091(0.030)1.991(0.039)2.031(0.062)1.997(0.033)
Co2.014(0.023)2.039(0.032)1.934(0.019)1.9741.990
Ni2.0291.9641.892(0.017)1.917(0.038)1.850(0.059)
Cu2.020
Zn1.964
Zr2.292(0.049)2.257
Nb2.3361.319
Mo2.254(0.065)2.250(0.061)2.204(0.049)2.193(0.054)2.109
Ru2.179(0.045)2.036(0.010)2.0632.092(0.057)2.091
Rh2.092(0.027)2.1002.040(0.054)2.011(0.026)1.995(0.031)
Pd2.0282.000(0.024)1.981(0.032)1.982(0.029)
Hf2.275(0.049)2.205
Ta2.217(0.035)2.225(0.056)2.199(0.073)
W2.189(0.039)2.1752.224
Re2.173(0.051)2.2902.0272.190(0.027)


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