Alchene Flashcards

(16 cards)

1
Q

Formulă generală

A

CnH2n

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2
Q

Hibridizare

A

sp²

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3
Q

Geometrie

A

Trigonală plană

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4
Q

etenil

A

vinil

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5
Q

propenil

A

alil

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6
Q

unghiul de valență

A

120°

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7
Q

Lungime leg C-C

A

1,33 Å

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8
Q

Lungime leg C-H

A

1,079 Å

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9
Q

Izomeri

A
  • de catenă pt n>= 4
  • de poz pt n >=3
  • geometrici (cis și trans)
  • de funcțiune
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10
Q

Planuri

A

Planul leg pi perpendicular pe planul leg sigma => rotația liberă un jurul dublei leg nu este permisă

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11
Q

Stări de agregare

A

C2-C4 GAZE
C5-C18 LICHID
C19+ SOLID

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12
Q

p.f și p.t

A
  • d.p cu creșterea nr. de at de C (dar < ca alcanii)
  • trans p.t > cis p.t
  • cis p.f > trans p.f
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13
Q

densitate

A
  • dens alchene > dens alcani
  • cis dens > trans dens
  • insolubili în apă (la fel ca alcanii)
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14
Q

Reactivitate hidracizi

A

HI > HBr > HCl

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15
Q

Reactivitate halogeni

A

Cl2 > Br2 > I2

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16
Q

Denumire