TY - JOUR
T1 - Molecular planarity and crystal structures of N-Salicylideneaminopyrazine derivatives
AU - Sugiyama, Haruki
N1 - Publisher Copyright:
© The Japan Society for Analytical Chemistry.
PY - 2018
Y1 - 2018
N2 - The crystal structures of N-salicylideneaminopyrazine (SAPz) derivatives, 2SAPZ (1) and 3,5-Br-2SAPZ (2), were determined by single-crystal X-ray structural analysis. They were revealed: (1) monoclinic, P21/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, R1 = 0.0651 [I > 2σ(I)]; (2) orthorhombic, P212121, a = 3.9508(4), b = 10.8449(11), c = 27.627(3)Å, Z = 4, V = 1183.7(2)Å3, R1 = 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, 2SAPZ (1) and 3,5-Br-2SAPZ (2), were determined by single-crystal X-ray structural analysis. They were revealed: (1) monoclinic, P21/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, R1 = 0.0651 [I > 2σ(I)]; (2) orthorhombic, P212121, a = 3.9508(4), b = 10.8449(11), c = 27.627(3)Å, Z = 4, V = 1183.7(2)Å3, R1 = 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.
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U2 - 10.2116/xraystruct.34.57
DO - 10.2116/xraystruct.34.57
M3 - Article
AN - SCOPUS:85063425490
SN - 1883-3578
VL - 34
SP - 57
EP - 58
JO - X-ray Structure Analysis Online
JF - X-ray Structure Analysis Online
IS - 12
ER -