Carbon-hydrogen bond

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A carbon-hydrogen bond, also known as a C-H bond is a single bond between carbon and hydrogen atoms, most commonly found in organic compounds [1]. Carbon-hydrogen bonds have a bond length of 1.09 Å (1.09 × 10-10 m) and a bond energy of 413 kJ/mol. Using Paulings scale; C (2.5), H (2.1) the electronegativity difference between these two atoms is 0.4. The bond type this electronegativity difference determines is generally regarded as being non-polar.

Compound classes consisting solely of C-H bonds and C-C bonds are alkanes, alkenes, alkynes, arene compounds and fullerenes.

The C-H bond in general is very unreactive, in structural formula of molecules the hydrogen atoms are in fact omitted. In several compounds classes, collectively called carbon acids, the C-H bond can be sufficiently acidic for proton removal. Unacticated C-H bonds participate in radical substitution. Another reaction type involving C-H bonds is so-called C-H bond activation mediated by metals.

[edit] See also

CH He
CLi CBe CB CC CN CO CF Ne
CNa CMg CAl CSi CP CS CCl Ar
CK CCa CSc CTi CV CCr CMn CFe CCo CNi CCu CZn CGa CGe CAs CSe CBr Kr
CRb CSr CY CZr CNb CMo CTc CRu CRh CPd CAg CCd CIn CSn CSb CTe CI Xe
CCs CBa CHf CTa CW CRe COs CIr CPt CAu CHg CTl CPb CBi CPo CAt Rn
Fr Ra Rf Db Sg Bh Hs Mt Ds Rg Uub Uut Uuq Uup Uuh Uus Uuo
↓
La CCe Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu
Ac Th Pa CU Np Pu Am Cm Bk Cf Es Fm Md No Lr


Chemical bonds to carbon
Core organic chemistry many uses in chemistry.
Academic research, but no widespread use Bond unknown / not assessed.


[edit] References

  1. ^ March, Jerry (1985). Advanced Organic Chemistry, Reactions, Mechanisms and Structure, third Edition, John Wiley & Sons. ISBN 0-471-85472-7.