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In the title compound, the herbicide bifenox, C14H9Cl2NO5, the dihedral angle between the dichlorobenzene and nitro­benzene rings is 78.79 (14)°. In the crystal, C—H...O hydrogen bonds give rise to a three-dimensional network structure in which there are both a π–π inter­action [ring centroid separation = 3.6212 (16) Å] and a C—Cl...π inter­action [Cl...ring centroid = 3.4754 (8) Å]. In addition, short Cl...Cl contacts [3.3767 (11) and 3.3946 (11) Å] are present.

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The title compound [systematic name: N,N-diethyl-2-(naphthalen-1-yl­oxy)propanamide], C17H21NO2, crystallizes with two independent mol­ecules in the asymmetric unit in which the dihedral angles between the naphthalene ring systems and the amide groups are 88.1 (9) and 88.7 (3)°. Four C—H...O hydrogen bonds stabilize the crystal structure.

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In the asymmetric unit of the title compound {systematic name: N′-(2,4-di­methyl­phen­yl)-N-[N-(2,4-di­methyl­phen­yl)carbox­imido­yl]-N-methyl­methanimidamide}, C19H23N3, which is a formamidine pesticide, there are two independent and conformationally similar mol­ecules, with the dihedral angle between the mean planes of the 2,4-di­methylbenzene rings in each mol­ecule being 41.63 (6) and 42.09 (5)°. The crystal structure is stabilized by a C—H...N hydrogen bond, as well as weak inter­molecular C—H...π and π–π inter­actions [ring centroid separation = 3.7409 (15) Å], giving one-dimensional chains extending down the b direction.
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