organic 2 Flashcards

1
Q

what does bond vibration depend on

A

bond strength
bond length
mass of each atom involved in the bond

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2
Q

what is the frequency at which a bond vibrates called

A

the absorption of that bond

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3
Q

what is the area from 500 to 1500 known as

A

finger print region

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4
Q

what are the most common bonds between 1500 and 1900

A

C=O
C=C

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5
Q

what are the most common bonds between 2500 and 4000

A

C-H
O-H
N-H

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6
Q

what is a molecular ion

A

positive ion formed when a molecule loses an electron

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7
Q

what is fragmentation

A

the process that causes a positive ion to split into pieces one of

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8
Q

what is the M+ mass equal to

A

the mass (Mr) of the compound

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9
Q

what is the result of a compound being in a mass spec

A

some molecules lose an electron and are ionised forming a molecular ion

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10
Q

how does fragmentation occur

A

energy from the ionisation process can be transferred to the molecular ion, making it vibrate and for the bond to break

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11
Q

what does fragmentation result in

A

splits into positive ion and radical

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