The title compound, C21H15N3O3, crystallizes in two polymorphic forms. In the orthorhombic polymo... more The title compound, C21H15N3O3, crystallizes in two polymorphic forms. In the orthorhombic polymorph, (I), in space group Fdd2 with Z' = 1, the molecules lie in general positions, while in the monoclinic polymorph, (II), in space group C2/c with Z' = 1/2, the molecules lie across twofold rotation axes. In each polymorph, the molecules are linked by a single C-H.pi(arene) hydrogen bond, forming chains in polymorph (I) and sheets in (II).
The title compound, C(13)H(9)NO(5), crystallizes in space group P-1, with Z' = 3. The molecul... more The title compound, C(13)H(9)NO(5), crystallizes in space group P-1, with Z' = 3. The molecules are linked by O-H...O hydrogen bonds [H...O = 1.79-1.81 A, O...O = 2.625 (3)-2.648 (3) A and O-H...O = 172-176 degrees ] into two types of R(2)(2)(8) dimer, only one of which is centrosymmetric. An extensive series of soft hydrogen bonds, of C-H...O and C-H...pi(arene) types, links the dimers into a three-dimensional framework.
The title compound, [Sn(2)Cl(4)(C(7)H(7))(4)(C(26)H(24)O(2)P(2))], (I), was isolated from the rea... more The title compound, [Sn(2)Cl(4)(C(7)H(7))(4)(C(26)H(24)O(2)P(2))], (I), was isolated from the reaction of 1,2-bis(diphenylphosphino)ethane with dibenzyltin(IV) dichloride in the presence of air. The molecules of (I) lie across centres of inversion in space group C2/c and contain five-coordinate Sn atoms. The molecules are linked into chains of rings by a single C-H.pi(arene) hydrogen bond.
In the title compound, C22H23N3O3S.H2O, the non-aromatic carbocyclic ring adopts a half-chair con... more In the title compound, C22H23N3O3S.H2O, the non-aromatic carbocyclic ring adopts a half-chair conformation. The molecules are linked into complex sheets by a combination of one N-H...O hydrogen bond and three O-H...O hydrogen bonds.
Acta Crystallographica Section E Structure Reports Online, 2007
In the title compound, C15H18N2O4S, there is a very wide C—C—C angle [130.72 (16)°] at the methin... more In the title compound, C15H18N2O4S, there is a very wide C—C—C angle [130.72 (16)°] at the methine C atom linking the two rings. A single C—H...O hydrogen bond links pairs of molecules into dimers around a twofold axis.
The title compound, C21H15N3O3, crystallizes in two polymorphic forms. In the orthorhombic polymo... more The title compound, C21H15N3O3, crystallizes in two polymorphic forms. In the orthorhombic polymorph, (I), in space group Fdd2 with Z' = 1, the molecules lie in general positions, while in the monoclinic polymorph, (II), in space group C2/c with Z' = 1/2, the molecules lie across twofold rotation axes. In each polymorph, the molecules are linked by a single C-H.pi(arene) hydrogen bond, forming chains in polymorph (I) and sheets in (II).
The title compound, C(13)H(9)NO(5), crystallizes in space group P-1, with Z' = 3. The molecul... more The title compound, C(13)H(9)NO(5), crystallizes in space group P-1, with Z' = 3. The molecules are linked by O-H...O hydrogen bonds [H...O = 1.79-1.81 A, O...O = 2.625 (3)-2.648 (3) A and O-H...O = 172-176 degrees ] into two types of R(2)(2)(8) dimer, only one of which is centrosymmetric. An extensive series of soft hydrogen bonds, of C-H...O and C-H...pi(arene) types, links the dimers into a three-dimensional framework.
The title compound, [Sn(2)Cl(4)(C(7)H(7))(4)(C(26)H(24)O(2)P(2))], (I), was isolated from the rea... more The title compound, [Sn(2)Cl(4)(C(7)H(7))(4)(C(26)H(24)O(2)P(2))], (I), was isolated from the reaction of 1,2-bis(diphenylphosphino)ethane with dibenzyltin(IV) dichloride in the presence of air. The molecules of (I) lie across centres of inversion in space group C2/c and contain five-coordinate Sn atoms. The molecules are linked into chains of rings by a single C-H.pi(arene) hydrogen bond.
In the title compound, C22H23N3O3S.H2O, the non-aromatic carbocyclic ring adopts a half-chair con... more In the title compound, C22H23N3O3S.H2O, the non-aromatic carbocyclic ring adopts a half-chair conformation. The molecules are linked into complex sheets by a combination of one N-H...O hydrogen bond and three O-H...O hydrogen bonds.
Acta Crystallographica Section E Structure Reports Online, 2007
In the title compound, C15H18N2O4S, there is a very wide C—C—C angle [130.72 (16)°] at the methin... more In the title compound, C15H18N2O4S, there is a very wide C—C—C angle [130.72 (16)°] at the methine C atom linking the two rings. A single C—H...O hydrogen bond links pairs of molecules into dimers around a twofold axis.
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