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Table 2 The geometry of the hydrogen bonds (Å, ˚)

From: Synthesis and crystal structures of 2-methyl-4-aryl-5-oxo-5H-indeno [1,2-b] pyridine carboxylate derivatives

D-H…A

D (D-H)

D (H…A)

D (D…A)

<(DHA)

Compound (I)

C (20) -H (20)…O (1)i

0.93

2.40

3.232(3)

149

Compound (II)

C (14)-H (14A)…O (2)

0.96

2.44

3.132(2)

128

C (5)-H (5)…O (3)ii

0.93

2.60

3.472(2)

157

C (22)-H (22)…O (1)iii

0.93

2.58

3.458(2)

157

C (16) -H (16A)…Cg(3)iv

0.97

2.72

3.566(2)

146

  1. Symmetry transformations used: (i) x + 1/2, −y − 1/2, z + 1/2; (ii) x, y-1, z-1; (iii) 1-x,-y,-z;(iv) -x,-y,-1-z; Cg3 centroid atom of the ring (C2-C7).
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BMC Chemistry

ISSN: 2661-801X

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