Q42 · CSIR-NET Chemistry, June 2015

Paper: CSIR-NET June 2015 · Subject: Inorganic Chemistry · Chapter: Bioinorganic Chemistry · Topic: Oxygen Carriers Hemoglobin · Marks: 2 · Difficulty: Easy

The Fe-Nporphyrin bond distances in the deoxy and oxy-hemoglobin, respectively, are

(a)2.1 and $2.0 \AA$

(b)2.0 and $2.0 \AA$

(c)2.2 and $2.3 \AA$

(d)2.3 and $2.5 \AA$

Answer

Answer: A ✓ checked by 4AB · confidence high

Explanation

Deoxy (high-spin Fe²⁺, out of plane) Fe–N ≈ 2.06–2.1 Å; oxy (low-spin, in plane) ≈ 2.0 Å.

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