how to name compounds using entizezzen and zussamen

how to name compounds using entizezzen and zussamen


4 Answers

aansi jomi
17 Points
12 years ago

E means entgegen(opposite) and Z means zusammen(together)...these are german words assigned  to distinguish alkenes based on priority of substituents on both sides of the double bonds......priority is again based on atomic numbers.....e.g.

            E/Z-example                 priorities

                     E                                         Z

1 indicates high priority and 2 indicates low the first molecule clearly shows that the priorities are directed opposite to each other hence assigned as E....and likewise Z for the second molecule.....(the priority is that carbon has higher atomic number than hydrogen)


Isotopes: H vs D ? Since isotopes have identical atomic numbers, the mass number is used to discriminate them so D > H

Priya Gorakshnath Anandkar
18 Points
12 years ago

hi  pranay

              E-is isomer which has higher mol.wt; groups on the opposite sides.   ex;

 here the1st is an ex, of z conformation & 2nd is E . if u like the ans plz approved it.

Souradeep Majumder
80 Points
12 years ago

first give them prefference according to their atomic weight  and then lone pair..................  if same number are diagonal then e if  same number lie in  same side then they are z...............


approve my answer...... plz........

pranay -askiitians expert
44 Points
12 years ago

thankx very very much

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