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(Z)-2-Phenyl-3-pivaloyl-1,1-dipropyl-guanidine.

ABSTRACT: In the title compound, C(18)H(29)N(3)O, a polysubstituted guanidine, the torsion angles indicate that the guanidine unit and the carbonyl group are almost perpendicular to one another [O-C-N-C= -7.40 (18), C-N-C-N= -97.21 (15) and 86.41 (13)°]. The crystal packing is stablized by inter-molecular N-H⋯O hydrogen bonds, which link the mol-ecules into a chain.

SUBMITTER: Said M

PROVIDER: S-EPMC2970094 | biostudies-literature |

REPOSITORIES: biostudies-literature

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2-Benzoyl-1,1-diethyl-3-phenyl-guanidine.

Project description:In the title tetrasubstituted guanidine, C(18)H(21)N(3)O, the guanidine and carbonyl groups are not coplanar, as reflected by the torsion angles involving the N=C atoms [17.6?(3), -141.68?(17) and 42.2?(3)°]. This is probably due to the absence of an intra-molecular N-H?O hydrogen bond, forming a six-membered ring, and is commonly observed in this class of compounds. In the crystal structure, centrosymmetric dimers are formed via pairs of inter-molecular N-H?O hydrogen bonds. The dihedral angles between the guanidine plane and the phenyl ring and benzoyl plane are38.06?(9) and 41.54?(7)°, respectively.

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Guanidinium phenyl-arsonate-guanidine-water (1/1/2).

Project description:In the structure of the title compound, CH(6)N(3) (+)·C(6)H(6)AsO(3) (-)·CH(5)N(3)·2H(2)O, the phenyl-arsonate anion participates in two R(2) (2)(8) cyclic hydrogen-bonding inter-actions, one with a guanidinium cation, the other with a guanidine mol-ecule. The anions are also bridged by the water mol-ecules, one of which completes a cyclic R(5) (3)(9) hydrogen-bonding association with the guanidinum cation, conjoint with one of the three R(2) (2)(8) associations about that ion, as well as forming an R(2) (1)(6) cyclic association with the guanidine mol-ecule. The result is a three-dimensional framework structure.

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Project description:In the title compound, C(20)H(15)Cl(2)N(3)O, a typical polysubstituted guanidine with normal geometric parameters, the torsion angles [C-N-C-O = 3.8?(2), N-C-N-C = -6.1?(2)°] indicate that the guanidine and carbonyl groups are almost coplanar, due to the pseudo-hexa-gonal ring formed by intra-molecular N-H?O hydrogen bonds. The crystal packing is stabilized by inter-molecular N-H?O hydrogen bonds, which link the mol-ecules into centrosymmetric dimers.

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1,1'-(p-Phenyl-enedimethyl-ene)dipiperidin-4-one.

Project description:In the mol-ecule of the title compound, C(18)H(24)N(2)O(2), the piperidine rings are in chair conformations. The crystal structure is stabilized by inter-molecular C-H?O hydrogen bonding. There are neither C-H?? nor ?-? inter-actions in the structure.

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Project description:The title salt, C(18)H(18)N(2) (2+)·2PF(6) (-), exists as non-inter-acting cations and anions. In the cation, the pyridine and phenyl-ene rings are aligned at 62.9?(1)°; the pyridine ring lies on a special position of m site symmetry and the phenyl-ene ring on a special position of 2/m site symmetry. The angle at the methyl-ene C atom is 112.8?(1)°. The anion lies on a special position of m site symmetry; four F atoms lie on this mirror plane.

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Project description:The mol-ecule of the title compound, C(22)H(18)N(4)O(2)S(2), lies across a crystallographic inversion centre. The central benzene ring forms dihedral angles of 29.39?(9) and 79.11?(12)°, respectively, with the thio-urea unit and the terminal phenyl ring. Intra-molecular N-H?O hydrogen bonds generate two S(6) ring motifs. In the crystal, mol-ecules are linked into chains along [10] by inter-molecular N-H?S hydrogen bonds.

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Project description:The asymmetric unit of the title compound, C(24)H(22)O(4), contains one half-mol-ecule, the other half being generated by a crystallographic center of inversion. The central benzene ring makes a dihedral angle of 72.49?(5)° with the terminal benzene ring. In the crystal, adjacent mol-ecules are linked through C-H?O inter-actions, forming a sheet structure parallel to the bc plane. The sheets are stacked along the a axis via ?-? inter-actions formed between the terminal benzene rings [centroid-centroid separation = 3.7276?(6)?Å].

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