The structure and Hirshfeld surface analysis of the 4-amino 3-nitrobenzoic acid triclinic polymorph

被引：0

作者：

Narmanova, F. S. ^{[1
]}

Turaev, Kh. Kh. ^{[1
]}

Kasimov, Sh. A. ^{[1
]}

Ibragimov, A. B. ^{[2
]}

Normamatov, A. S. ^{[2
]}

Ruzmetov, A. Kh. ^{[2
]}

Mengnorov, I. J. ^{[2
]}

Balakrishnan, C. ^{[3
]}

Eshimbetov, A. G. ^{[4
]}

Ashurov, J. M. ^{[4
]}

机构：

[1] Termez State Univ, Barkamol Avlod St 43, Termez 190111, Uzbekistan

[2] Uzbek Acad Sci, Inst Gen & Inorgan Chem, Mirzo Ulugbek Str,77a, Tashkent 100170, Uzbekistan

[3] Erode Sengunthar Engn Coll, Dept Chem, Erode 638057, Tamil Nadu, India

[4] Uzbek Acad Sci, Inst Bioorgan Chem, Mirzo Ulugbek Str 83, Tashkent 100125, Uzbekistan

来源：

STRUCTURAL CHEMISTRY | 2024年 / 35卷 / 03期

关键词：

4-Amino-3-nitrobenzoic acid; Triclinic polymorph; Structure; X-ray crystallography; Hirshfeld surfaces analysis; CRYSTAL-STRUCTURE;

D O I：

10.1007/s11224-024-02313-5

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

By preparation of 4-amino-3-nitrobenzoic acid (4-A3NBA-P) in the triclinic crystal form in contrast to known monoclinic crystals polymorphism of this compound has been established. The monoclinic form is called polymorph I, while triclinic crystals are designated as polymorph II. In the former polymorph, 4-A3NBA molecules are associated with the 3D network by H-bonds, while in the case of the latter polymorph, the H-bonded layers are incorporated into crystal structure by pi center dot center dot center dot pi interactions. Therefore, Hirshfeld surface analyses indicate that the percentage of the O center dot center dot center dot H/H center dot center dot center dot O interactions of polymorph II (similar to 39.1%) is less than that of polymorph I (54.5%). The TG-DTA studies attest that there is no "polymorph II -> polymorph I" phase transition.

引用

页码：953 / 960

页数：8

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