Question

(h) What can be said with certainty if a compound has [a]}5 = -9. 25°?
(1) The Compound has the (S) Configuration
(ii) The Compound has the (R) Configuration.
(ii) The Compound is not a meso form.
(iv) The Compound possesses only one stereogenic center.​

Answer 1

Explanation:

(ii) The Compound has the (R) Configuration.

Answer 2

If a compound has [a]}5 = -9. 25° is (ii) The Compound has the (R) Configuration.

Explanation:

1.R configuration indicates that a clockwise circular arrow that goes from higher priority to lower priority crosses over the lowest priority substituent and that lowest-priority substituent is in the back.

2.The R / S system is an important nomenclature system for denoting enantiomers.

3.This approach labels each chiral center R or S according to a system by which its substituents are each assigned a priority, according to the Cahn–Ingold–Prelog priority rules (CIP), based on atomic number.

4.Stereochemistry is the study of the three‐dimensional structure of molecules.

5.The cis and trans isomers are forms of stereoisomers, differing structurally only in the location of the atoms of the molecule in three‐dimensional space. Such stereoisomers can have different physical and chemical properties.