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English: Bond lengths and angles of benzene and different group 15 heterobenzenes (from left to right: benzene, pyridine, phosphabenzene, arsabenzene, stilbabenzene, and bismabenzene) Date 25 April 2010
MSDS for benzene is available at AMOCO. ... Bond energy? Bond length: 1.39 Å C-C [1] Molecular geometry: 120 °C–C–C 120° H–C–C Magnetic susceptibility?
It is generally considered the average length for a carbon–carbon single bond, but is also the largest bond length that exists for ordinary carbon covalent bonds. Since one atomic unit of length (i.e., a Bohr radius) is 52.9177 pm, the C–C bond length is 2.91 atomic units, or approximately three Bohr radii long.
The C–C bond lengths are greater than a double bond (135 pm) but shorter than a single bond (147 pm). This intermediate distance is caused by electron delocalization : the electrons for C=C bonding are distributed equally between each of the six carbon atoms.
Ouroboros-benzene.svg; Benzene Ouroboros.gif; Licensing. Public domain Public domain false false: I, ... consistent bond lengths: 18:23, 11 August 2009: 275 × 300 ...
Bond strength? Bond length? Bond angle? Magnetic susceptibility, χ m: 69.5 x10 −6 cm 3 mol −1: Surface tension, 34.78 dyn/cm at 10°C 32.99 dyn/cm at 25°C 30.02 dyn/cm at 50°C 27.04 dyn/cm at 75°C 24.06 dyn/cm at 100°C Speed of Sound: 1311 m/s at 20°C
For example, (η 5 –cyclopentadienyl) 2 Cr (ML 4 X 2) and (η 6 –benzene) 2 Cr (ML 6) both have a LBN of 6 as compared to classical coordination numbers of 10 and 12. [3] Well known complexes such as Ferrocene and Uranocene also serve as examples where LBN and coordination number differ.
The average length of a C–C single bond is 154 pm; that of a C=C double bond is 133 pm. In localized cyclohexatriene, the carbon–carbon bonds should be alternating 154 and 133 pm. Instead, all carbon–carbon bonds in benzene are found to be about 139 pm, a bond length intermediate between single and double bond.