Triclinic polymorph of 4-[4-(4-formylphenoxy)butoxy]benzaldehyde
نویسندگان
چکیده
The title compound, C18H18O4, is a triclinic polymorph of the previously reported monoclinic polymorph [Han & Zhen (2005 ▶). Acta Cryst. E61, o4358-o4359]. In the crystal of the triclinic polymorph, molecules are linked by two pairs of C-H⋯O hydrogen bonds, forming a two-dimensional network parallel to (102), and enclosing loops with graph set motifs of R2(2)(8) and R2(2)(6).
منابع مشابه
2-[4-(2-Formylphenoxy)butoxy]benzaldehyde
In the crystal structure of the title compound, C(18)H(18)O(4), the full mol-ecule is generated by the application of an inversion centre. The mol-ecule is essentially planar, with an r.m.s. deviation of 0.017 (1) Å for all non-H atoms. The mol-ecules are linked through inter-molecular C-H⋯O inter-actions to form a mol-ecular sheet parallel to the ([Formula: see text]02) plane.
متن کاملMonoclinic polymorph of 2,5-bis[4-(dimethylamino)styryl]-3,6-dimethylpyrazine
The title compound, C(26)H(30)N(4), was prepared by condensation of tetra-methyl-pyrazine and dimethyl-amino-benzaldehyde and crystallizes from chloro-form/methanol in two different forms. Block-shaped crystals belong to the monoclinic crystal system and plates to the triclinic system. The two crystal forms differ in the arrangement of the centrosymmetric mol-ecules, which have nearly identical...
متن کامل4-{2-[2-(4-Formylphenoxy)ethoxy]ethoxy}benzaldehyde
The title compound, C(18)H(18)O(5), was obtained by the reaction of 4-hy-droxy-benzaldehyde with bis-(2,2-dichloro-eth-yl) ether in dimethyl-formamide. In the crystal, the mol-ecule lies on a twofold rotation axis that passes through the central O atom of the aliphatic chain, thus leading to one half-mol-ecule being present per asymmetric unit. The carbonyl, aryl and O-CH(2)-CH(2) groups are al...
متن کاملSpace group revsion of the triclinic polymorph of salicylaldehyde azine
The structure of the title compound, C(14)H(12)N(2)O(2) {systematic name: 2,2'-[hydrazinediylidenebis(methanylyl-idene)]diphen-ol}, has already been determined in the triclinic space group P[Formula: see text] with Z = 4 [El-Medani, Aboaly, Abdalla & Ramadan (2004 ▶). Spectrosc. Lett.37, 619-632]. However, the correct space group should be P2(1)/c with Z = 4. This structure is a new polymorph o...
متن کامل4-[5-(4-Formylphenoxy)pentoxy]benzaldehyde
In the title compound, C(20)H(19)O(4), the benzene rings, linked via five methyl-ene C atoms, form a dihedral angle of 77.28 (6)°. In the crystal, mol-ecules are linked via pairs of weak C-H⋯O inter-actions [graph set R(2) (2)(6)] into dimers that are further connected by additional weak C-H⋯O interactions [graph sets R(2) (2)(14), R(2) (2)(26) and R(2) (2)(6)].
متن کامل