Variation in supramolecular arrangements of hydrazones, o-H2NC6H4CMe=NNHC6H4X (X = H, o-, m- and p-NO2), derived from o-aminoacetophenone and phenylhydrazines

R. Alan Howie, Thomas C. Baddeley, James L. Wardell, Solange M. S. V. Wardell

Research output: Contribution to journalArticle

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Abstract

The crystal structures of four hydrazones, 1, derived from phenylhydrazines, XC6H4NHNH2 (Xdouble bond; length as m-dashH, o-NO2, m-NO2 or p-NO2) with 2-aminoacetophenone are reported, as is the mono hydrochloride, (2: Xdouble bond; length as m-dashm-NO2), of (1: Xdouble bond; length as m-dashm-NO2). Consistent strong intramolecular hydrogen bonds in 1 are of the type, Nsingle bondH(amino)⋯N(hydrazono), while (1: Xdouble bond; length as m-dashm-NO2) portrays an additional Nsingle bondH(hydrazono)⋯O(nitro), intramolecular hydrogen bond. Of interest, different sets of strong intermolecular interactions are found even among the nitro derivatives, 1. In (1: Xdouble bond; length as m-dasho-NO2), the strongest intermolecular interactions are Nsingle bondH(amino)⋯O(nitro) hydrogen bonds, while in (1: Xdouble bond; length as m-dashm-NO2 and p-NO2), both Nsingle bondH(hydrazono)⋯O(nitro) and Nsingle bondH(amino)⋯N(amino) are present. These strong intermolecular hydrogen bonds coupled with different combinations of some of Csingle bondH⋯O, πsingle bondπ stacking interactions and Nsingle bondO⋯π generate different supramolecular arrays for (1: X = nitro): 2-D, 2-D and 3-D, respectively for (1: Xdouble bond; length as m-dasho-NO2), for (1: Xdouble bond; length as m-dashm-NO2) and (1: Xdouble bond; length as m-dashp-NO2). In (1: Xdouble bond; length as m-dashH), the major intermolecular interactions are Nsingle bondH(hydrazono)⋯N(amino hydrogen bonds: these, supplemented by weaker Nsingle bondH⋯π and Csingle bondH⋯π interactions, generate a two-dimensional array.

While significant changes in the intermolecular interactions result on formation of the salt, (2: Xdouble bond; length as m-dashm-NO2) from (1: Xdouble bond; length as m-dashm-NO2), the strong Nsingle bondH(amino)⋯N(hydrazono) intramolecular hydrogen bonds persist. Strong intermolecular hydrogen bonds found in (2: Xdouble bond; length as m-dashm-NO2) are of the types Nsingle bondH⋯Cl (both hydrazone and amine), Nsingle bondH(amino)⋯O(nitro): these coupled with weaker Csingle bondH⋯O, Nsingle bondO⋯π, and πsingle bondπ generate a three dimensional array.
Original languageEnglish
Pages (from-to)16-22
Number of pages7
JournalJournal of Molecular Structure
Volume1020
Early online date20 Apr 2012
DOIs
Publication statusPublished - 8 Aug 2012

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Phenylhydrazines
Hydrazones
Amines
Hydrogen bonds
2-aminoacetophenone
Salts
Crystal structure

Keywords

  • o-aminophenyl ketones
  • supramolecular arrangements
  • hydrazones

Cite this

Variation in supramolecular arrangements of hydrazones, o-H2NC6H4CMe=NNHC6H4X (X = H, o-, m- and p-NO2), derived from o-aminoacetophenone and phenylhydrazines. / Howie, R. Alan; Baddeley, Thomas C.; Wardell, James L.; Wardell, Solange M. S. V.

In: Journal of Molecular Structure, Vol. 1020, 08.08.2012, p. 16-22.

Research output: Contribution to journalArticle

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abstract = "The crystal structures of four hydrazones, 1, derived from phenylhydrazines, XC6H4NHNH2 (Xdouble bond; length as m-dashH, o-NO2, m-NO2 or p-NO2) with 2-aminoacetophenone are reported, as is the mono hydrochloride, (2: Xdouble bond; length as m-dashm-NO2), of (1: Xdouble bond; length as m-dashm-NO2). Consistent strong intramolecular hydrogen bonds in 1 are of the type, Nsingle bondH(amino)⋯N(hydrazono), while (1: Xdouble bond; length as m-dashm-NO2) portrays an additional Nsingle bondH(hydrazono)⋯O(nitro), intramolecular hydrogen bond. Of interest, different sets of strong intermolecular interactions are found even among the nitro derivatives, 1. In (1: Xdouble bond; length as m-dasho-NO2), the strongest intermolecular interactions are Nsingle bondH(amino)⋯O(nitro) hydrogen bonds, while in (1: Xdouble bond; length as m-dashm-NO2 and p-NO2), both Nsingle bondH(hydrazono)⋯O(nitro) and Nsingle bondH(amino)⋯N(amino) are present. These strong intermolecular hydrogen bonds coupled with different combinations of some of Csingle bondH⋯O, πsingle bondπ stacking interactions and Nsingle bondO⋯π generate different supramolecular arrays for (1: X = nitro): 2-D, 2-D and 3-D, respectively for (1: Xdouble bond; length as m-dasho-NO2), for (1: Xdouble bond; length as m-dashm-NO2) and (1: Xdouble bond; length as m-dashp-NO2). In (1: Xdouble bond; length as m-dashH), the major intermolecular interactions are Nsingle bondH(hydrazono)⋯N(amino hydrogen bonds: these, supplemented by weaker Nsingle bondH⋯π and Csingle bondH⋯π interactions, generate a two-dimensional array.While significant changes in the intermolecular interactions result on formation of the salt, (2: Xdouble bond; length as m-dashm-NO2) from (1: Xdouble bond; length as m-dashm-NO2), the strong Nsingle bondH(amino)⋯N(hydrazono) intramolecular hydrogen bonds persist. Strong intermolecular hydrogen bonds found in (2: Xdouble bond; length as m-dashm-NO2) are of the types Nsingle bondH⋯Cl (both hydrazone and amine), Nsingle bondH(amino)⋯O(nitro): these coupled with weaker Csingle bondH⋯O, Nsingle bondO⋯π, and πsingle bondπ generate a three dimensional array.",
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T1 - Variation in supramolecular arrangements of hydrazones, o-H2NC6H4CMe=NNHC6H4X (X = H, o-, m- and p-NO2), derived from o-aminoacetophenone and phenylhydrazines

AU - Howie, R. Alan

AU - Baddeley, Thomas C.

AU - Wardell, James L.

AU - Wardell, Solange M. S. V.

PY - 2012/8/8

Y1 - 2012/8/8

N2 - The crystal structures of four hydrazones, 1, derived from phenylhydrazines, XC6H4NHNH2 (Xdouble bond; length as m-dashH, o-NO2, m-NO2 or p-NO2) with 2-aminoacetophenone are reported, as is the mono hydrochloride, (2: Xdouble bond; length as m-dashm-NO2), of (1: Xdouble bond; length as m-dashm-NO2). Consistent strong intramolecular hydrogen bonds in 1 are of the type, Nsingle bondH(amino)⋯N(hydrazono), while (1: Xdouble bond; length as m-dashm-NO2) portrays an additional Nsingle bondH(hydrazono)⋯O(nitro), intramolecular hydrogen bond. Of interest, different sets of strong intermolecular interactions are found even among the nitro derivatives, 1. In (1: Xdouble bond; length as m-dasho-NO2), the strongest intermolecular interactions are Nsingle bondH(amino)⋯O(nitro) hydrogen bonds, while in (1: Xdouble bond; length as m-dashm-NO2 and p-NO2), both Nsingle bondH(hydrazono)⋯O(nitro) and Nsingle bondH(amino)⋯N(amino) are present. These strong intermolecular hydrogen bonds coupled with different combinations of some of Csingle bondH⋯O, πsingle bondπ stacking interactions and Nsingle bondO⋯π generate different supramolecular arrays for (1: X = nitro): 2-D, 2-D and 3-D, respectively for (1: Xdouble bond; length as m-dasho-NO2), for (1: Xdouble bond; length as m-dashm-NO2) and (1: Xdouble bond; length as m-dashp-NO2). In (1: Xdouble bond; length as m-dashH), the major intermolecular interactions are Nsingle bondH(hydrazono)⋯N(amino hydrogen bonds: these, supplemented by weaker Nsingle bondH⋯π and Csingle bondH⋯π interactions, generate a two-dimensional array.While significant changes in the intermolecular interactions result on formation of the salt, (2: Xdouble bond; length as m-dashm-NO2) from (1: Xdouble bond; length as m-dashm-NO2), the strong Nsingle bondH(amino)⋯N(hydrazono) intramolecular hydrogen bonds persist. Strong intermolecular hydrogen bonds found in (2: Xdouble bond; length as m-dashm-NO2) are of the types Nsingle bondH⋯Cl (both hydrazone and amine), Nsingle bondH(amino)⋯O(nitro): these coupled with weaker Csingle bondH⋯O, Nsingle bondO⋯π, and πsingle bondπ generate a three dimensional array.

AB - The crystal structures of four hydrazones, 1, derived from phenylhydrazines, XC6H4NHNH2 (Xdouble bond; length as m-dashH, o-NO2, m-NO2 or p-NO2) with 2-aminoacetophenone are reported, as is the mono hydrochloride, (2: Xdouble bond; length as m-dashm-NO2), of (1: Xdouble bond; length as m-dashm-NO2). Consistent strong intramolecular hydrogen bonds in 1 are of the type, Nsingle bondH(amino)⋯N(hydrazono), while (1: Xdouble bond; length as m-dashm-NO2) portrays an additional Nsingle bondH(hydrazono)⋯O(nitro), intramolecular hydrogen bond. Of interest, different sets of strong intermolecular interactions are found even among the nitro derivatives, 1. In (1: Xdouble bond; length as m-dasho-NO2), the strongest intermolecular interactions are Nsingle bondH(amino)⋯O(nitro) hydrogen bonds, while in (1: Xdouble bond; length as m-dashm-NO2 and p-NO2), both Nsingle bondH(hydrazono)⋯O(nitro) and Nsingle bondH(amino)⋯N(amino) are present. These strong intermolecular hydrogen bonds coupled with different combinations of some of Csingle bondH⋯O, πsingle bondπ stacking interactions and Nsingle bondO⋯π generate different supramolecular arrays for (1: X = nitro): 2-D, 2-D and 3-D, respectively for (1: Xdouble bond; length as m-dasho-NO2), for (1: Xdouble bond; length as m-dashm-NO2) and (1: Xdouble bond; length as m-dashp-NO2). In (1: Xdouble bond; length as m-dashH), the major intermolecular interactions are Nsingle bondH(hydrazono)⋯N(amino hydrogen bonds: these, supplemented by weaker Nsingle bondH⋯π and Csingle bondH⋯π interactions, generate a two-dimensional array.While significant changes in the intermolecular interactions result on formation of the salt, (2: Xdouble bond; length as m-dashm-NO2) from (1: Xdouble bond; length as m-dashm-NO2), the strong Nsingle bondH(amino)⋯N(hydrazono) intramolecular hydrogen bonds persist. Strong intermolecular hydrogen bonds found in (2: Xdouble bond; length as m-dashm-NO2) are of the types Nsingle bondH⋯Cl (both hydrazone and amine), Nsingle bondH(amino)⋯O(nitro): these coupled with weaker Csingle bondH⋯O, Nsingle bondO⋯π, and πsingle bondπ generate a three dimensional array.

KW - o-aminophenyl ketones

KW - supramolecular arrangements

KW - hydrazones

U2 - 10.1016/j.molstruc.2012.04.023

DO - 10.1016/j.molstruc.2012.04.023

M3 - Article

VL - 1020

SP - 16

EP - 22

JO - Journal of Molecular Structure

JF - Journal of Molecular Structure

SN - 0022-2860

ER -