Ether Hbond

[hospitaldoctor1]

Do ethers have hydrogen bonding? Kaplan says no... but I learned that hydrogen bonding occurs if there are lone pair electrons on F, O, or N.
Ethers DO have lone pairs on Oxygen, no?

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[wanderer]

Ethers do hydrogen bond in a system that contains hydrogen bond donors (such as alcohol or water), but not in pure form since they can only accept hydrogen bonds.

 

[PiBond]

Ethers do hydrogen bond in a system that contains hydrogen bond donors (such as alcohol or water), but not in pure form since they can only accept hydrogen bonds.

This is correct. Solvents with ethers are considered polar aprotic solvents. We like to use solvents like diethyl ether when conducting Sn2 reactions.

 

[boaz]

Do ethers have hydrogen bonding? Kaplan says no... but I learned that hydrogen bonding occurs if there are lone pair electrons on F, O, or N.
Ethers DO have lone pairs on Oxygen, no?

Ethers do hydrogen bond in a system that contains hydrogen bond donors (such as alcohol or water), but not in pure form since they can only accept hydrogen bonds.

There are H-bond acceptors and H-bond donors. The acceptor is the one with lone pair electrons. The donor is the one with the proton. An ether oxygen is an H-bond acceptor.

H-bond donors are almost always H-bond acceptors: in pure water, one molecule is the donor, while the other is the acceptor.

 

[Isoprop]

this is what you have to know for the mcat for h-bonds.

one molecule must have an N-H, O-H, or F-H
the other molecule must have an N, an O, or an F.

Ether cannot H-bond with itself. But ether can H-bond with water.