Molecular planarity and crystal structures of N-Salicylideneaminopyrazine derivatives

Research output: Contribution to journalArticle

Abstract

The crystal structures of N-salicylideneaminopyrazine (SAPz) derivatives, 2SAP Z (1) and 3,5-Br-2SAP Z (2), were determined by single-crystal X-ray structural analysis. They were revealed: (1) monoclinic, P2 1 /n, a = 4.541(4), b = 19.523(18), c = 10.844(9)Å, β = 97.80(3)°, Z = 4, V = 952.5(15)Å3, R 1 = 0.0651 [I > 2σ(I)]; (2) orthorhombic, P2 1 2 1 2 1 , a = 3.9508(4), b = 10.8449(11), c = 27.627(3)Å, Z = 4, V = 1183.7(2)Å 3 , R 1 = 0.0494 [I > 2σ(I)]. These molecular conformations are planar because of the lack of intramolecular steric repulsion with the pyrazine ring. The dihedral angles between phenol ring and pyrazine ring were 5.26(11) and 10.0(4)°, respectively.

Original languageEnglish
Pages (from-to)57-58
Number of pages2
JournalX-ray Structure Analysis Online
Volume34
Issue number12
Publication statusPublished - 2018 Jan 1

Fingerprint

Pyrazines
Dihedral angle
Structural analysis
Molecular structure
Phenols
Conformations
Crystal structure
Single crystals
Derivatives
X rays
Phenol

ASJC Scopus subject areas

  • Analytical Chemistry
  • Materials Chemistry

Cite this

Molecular planarity and crystal structures of N-Salicylideneaminopyrazine derivatives. / Sugiyama, Haruki.

In: X-ray Structure Analysis Online, Vol. 34, No. 12, 01.01.2018, p. 57-58.

Research output: Contribution to journalArticle

@article{dd3c7815df9e49fbbf2d572d7904f7d0,
title = "Molecular planarity and crystal structures of N-Salicylideneaminopyrazine derivatives",
abstract = "The crystal structures of N-salicylideneaminopyrazine (SAPz) derivatives, 2SAP Z (1) and 3,5-Br-2SAP Z (2), were determined by single-crystal X-ray structural analysis. They were revealed: (1) monoclinic, P2 1 /n, a = 4.541(4), b = 19.523(18), c = 10.844(9){\AA}, β = 97.80(3)°, Z = 4, V = 952.5(15){\AA}3, R 1 = 0.0651 [I > 2σ(I)]; (2) orthorhombic, P2 1 2 1 2 1 , a = 3.9508(4), b = 10.8449(11), c = 27.627(3){\AA}, Z = 4, V = 1183.7(2){\AA} 3 , R 1 = 0.0494 [I > 2σ(I)]. These molecular conformations are planar because of the lack of intramolecular steric repulsion with the pyrazine ring. The dihedral angles between phenol ring and pyrazine ring were 5.26(11) and 10.0(4)°, respectively.",
author = "Haruki Sugiyama",
year = "2018",
month = "1",
day = "1",
language = "English",
volume = "34",
pages = "57--58",
journal = "X-ray Structure Analysis Online",
issn = "1883-3578",
publisher = "Japan Society for Analytical Chemistry",
number = "12",

}

TY - JOUR

T1 - Molecular planarity and crystal structures of N-Salicylideneaminopyrazine derivatives

AU - Sugiyama, Haruki

PY - 2018/1/1

Y1 - 2018/1/1

N2 - The crystal structures of N-salicylideneaminopyrazine (SAPz) derivatives, 2SAP Z (1) and 3,5-Br-2SAP Z (2), were determined by single-crystal X-ray structural analysis. They were revealed: (1) monoclinic, P2 1 /n, a = 4.541(4), b = 19.523(18), c = 10.844(9)Å, β = 97.80(3)°, Z = 4, V = 952.5(15)Å3, R 1 = 0.0651 [I > 2σ(I)]; (2) orthorhombic, P2 1 2 1 2 1 , a = 3.9508(4), b = 10.8449(11), c = 27.627(3)Å, Z = 4, V = 1183.7(2)Å 3 , R 1 = 0.0494 [I > 2σ(I)]. These molecular conformations are planar because of the lack of intramolecular steric repulsion with the pyrazine ring. The dihedral angles between phenol ring and pyrazine ring were 5.26(11) and 10.0(4)°, respectively.

AB - The crystal structures of N-salicylideneaminopyrazine (SAPz) derivatives, 2SAP Z (1) and 3,5-Br-2SAP Z (2), were determined by single-crystal X-ray structural analysis. They were revealed: (1) monoclinic, P2 1 /n, a = 4.541(4), b = 19.523(18), c = 10.844(9)Å, β = 97.80(3)°, Z = 4, V = 952.5(15)Å3, R 1 = 0.0651 [I > 2σ(I)]; (2) orthorhombic, P2 1 2 1 2 1 , a = 3.9508(4), b = 10.8449(11), c = 27.627(3)Å, Z = 4, V = 1183.7(2)Å 3 , R 1 = 0.0494 [I > 2σ(I)]. These molecular conformations are planar because of the lack of intramolecular steric repulsion with the pyrazine ring. The dihedral angles between phenol ring and pyrazine ring were 5.26(11) and 10.0(4)°, respectively.

UR - http://www.scopus.com/inward/record.url?scp=85063425490&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85063425490&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:85063425490

VL - 34

SP - 57

EP - 58

JO - X-ray Structure Analysis Online

JF - X-ray Structure Analysis Online

SN - 1883-3578

IS - 12

ER -