Temperature effect on the structure of the complex 1,8-bis(dimethylamino)naphthalene–chloranilic acid (2/1) dihydrate
Temperature effect on the structure of the complex 1,8-bis(dimethylamino)naphthalene–chloranilic acid (2/1) dihydrate
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温度对 1,8-双(二甲氨基)萘-氯苯甲酸(2/1)二水合物结构的影响
DOI:
10.1107/s0108270191003426
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发表时间:
1991
期刊:
影响因子:
--
通讯作者:
E. Grech
中科院分区:
文献类型:
--
作者:
J. Kanters;A. Schouten;A. Duisenberg;T. Głowiak;Z. Malarski;L. Sobczyk;E. Grech
indicate some distortion tOwards the 5H6 half chair with O(1)--C(6)--C(5)--C(4) and O(1)-C(2)C(3)---C(4) torsion angles 59.7 (3) and -41-6 (3) °, respectively. Similar deformations were observed in carbohydrates with the sp2-hybridized C atom in position 2 of the pyranoid ring. The distortion in the title compound corresponds to a small deformation of the chair conformation (Ciunik, Szweda & Smiatacz, 1991). The benzyloxyphenyl group is an axial substitutent (2a) of the pyranoid ring and the O(1) -C(2) C(7)--C(12) torsion angle is 1 7 . 0 (3) °. In consequence the pyranoid and the aromatic rings are almost perpendicular to each other. The benzyloxyphenyl subst i tuent has the extended antiperiplanar conformation with C(10)---O(3)---C(13)--C(14) and C(1 l)---C( 10)---O(3)---C(13) torsion angles of 175.6 (2) and 2 . 9 (3) °, respectively. Both aromatic rings are mutually twisted. All bond lengths and valence angles have normal values. This work was supported by the Polish Ministry of Science and Higher Education (project RP.II.10).