Hydrogen bonding

[arielle_cunanan3K]

Can a hydrogen bond still form when H is bonded to F, O or N, but also a C. Like will CHO have a hydrogen bond?

[Matthew Li 1B]

as long as H is bonded to a electronegative atom then it can undergo hydrogen bonding

[Sarah Lesmeister 2F]

As previously mentioned H has to be bonded to a more electronegative atom so that the hydrogen will have a partially positive charge.

[Barbara Soliman 1G]

In order for a hydrogen bond to form, the hydrogen in one molecule MUST be bonded to N, O, or F. Then, it can form a hydrogen bond with N, O, or F in a different molecule. As long as H is directly bonded to N, O, or F in a molecule, it does not matter what other atoms are bonded to it. Hope this helps!

[Yuzhe Yuan]

Hi,

I assume you are referring to the aldehyde group -CHO? In this case, the hydrogen is not bonded to the oxygen, so H does not have partial positive charge and cannot form hydrogen bonds with other molecules. However the oxygen atom does have a partial negative charge, so it can form hydrogen bonds with other molecules that have partial positive H, like water.

[SofiaMammaro-1K]

"In chemistry, a C–H···O interaction is occasionally described as a special type of weak hydrogen bond. These interactions frequently occur in the structures of important biomolecules like amino acids, proteins, sugars, DNA and RNA."

[Michael 1G]

If hydrogen is bonded to another atom, like carbon, it cannot form hydrogen bonds because it has to be bonded with the highly electronegative atoms Fluorine, Nitrogen or Oxygen. CHO cannot form hydrogen bonds with itself because the H is attached to a carbon but it can still form with other molecules. Since the oxygen of CHO is partially negative, it can form hydrogen bonds with a slightly positive hydrogen as long as it is bonded to F, N or O, like in a water molecule.

[Akshat Katoch 2K]

Hydrogen must be bonded to a highly electronegative atom. Carbon is not highly electronegative so it will not create a hydrogen bond. An easy rule of thumb is that if Hydrogen is bonded to either Oxygen, Nitrogen, or Flourine (all highly electronegative) then a hydrogen bond can form. Keep in mind that Hydrogen bonds are intermolecular forces so the H-O bond in water isn't a hydrogen bond, but H-O-H ---- H-O-H (dotted lines is Hydrogen bonds) is an example.

[Rachel Bartley 2B]

Hydrogen bonding only occurs when the H atom is bound to another highly electronegative atom such as N,O, F. Since the H in CHO is not bound to the O, there is no hydrogen bonding here. However, if another positive H atom binds to the partially negative O atom in CHO, then hydrogen bonding can occur here.

[michaelcrisera]

Yes, if a Hydrogen atom is directly bonded to a Fluorine, Oxygen, or Nitrogen atom in a compound, it can undergo Hydrogen bonding. This is because this bond will create a very strong dipole because Fluorine, Oxygen, and Nitrogen are the three most electronegative elements.

[Mia Orr 3B]

Hydrogen bonding occurs when a hydrogen atom is covalently bonded to an electronegative atom, such as nitrogen, oxygen, and fluorine, and is close to another electronegative atom with an available lone pair. A hydrogen bond will not form if the hydrogen atom is bonded to the carbon atom since it is not very electronegative.

[Caitlin Gee 2K]

Yes, CHO can have hydrogen bonding, as long as the hydrogen is bonded to F, O, or N.

[Nithya Narapa Reddy]

Even if the compound is bonded to other elements, so in the example you provided C, as long as the Hydrogen is still bonded to either F, O, or N, it will still form a hydrogen bond.

[Amaris Cagungun 1F]

The hydrogen must be bonded to a highly electronegative atom. Since carbon is not a highly electronegative atom it will not undergo hydrogen bonding. As long as H is bonded to N, O, or F then it does not matter what other atoms are bonded to it.

[Diego Gonzalez 1H]

CHO can form a hydrogen bond but it is generally considered to be a weak hydrogen bond.