Tania N. Hill

1-(2-Meth­oxy­phen­yl)-2-{[2-(2-meth­oxy­phen­yl)hydrazinyl­idene](nitro)­meth­yl}diazene

In the title compound, C15H15N5O4, a nitroformazan derivative, the formazan unit is essentially planar with an r.m.s. deviation of 0.0204 (6) Å and adopts a closed syn,s-cis configuration with an intramolecular N—H⋯N hydrogen bond. The formazan plane makes dihedral angles of 4.32 (5) and 24.35 (5)° with the benzene rings. The dihedral angle between the formazan plane and the nitro group is 12.58 (8)°. In the crystal, C—H⋯O interactions connect the molecules into an inversion dimer.

5-(Phenyl­diazen­yl)tropolone

The title compound [systematic name: (E)-2-hydroxy-5-(phenyldiazenyl)cyclohepta-2,4,6-trien-1-one], C13H10N2O2, is essentially planar with an r.m.s. deviation of 0.036 (2) Å and a dihedral angle of 1.57 (8)° between the phenyl and tropolone rings. In the crystal, molecules are linked by pairs of O—H⋯O hydrogen bonds into inversion dimers. The dimers are further connected by C—H⋯O hydrogen bonds and π–π stacking interactions, with centroid–centroid distances of 3.6934 (9) and 3.6282 (9) Å.

[N,N′-Bis(4-chloro­phen­yl)pentane-2,4-diiminato]dicarbonyl­rhodium(I)

The title compound, [Rh(C17H15Cl2N2)(CO)2], is a rhodium(I) derivative of a β-diketiminato moiety. It is an example of a new type of β-diketiminate derivative that has not yet been characterized via solid-state methods. The complex crystallizes with a distorted square-planar geometry about the RhI atom (m symmetry). A weak intermolecular C—H⋯O contact is observed.

Crystal structure of trans-bis((E)-7-oxo-4-(phenyldiazenyl)cyclohepta-1,3,5-trien-1-olato)-κ2O,O′)-bis(pyridine-κN)cobalt(II), C36H28CoN6O4

Abstract C36H28Co1N6O4, triclinic, P1̄ (no. 2), a = 6.3166(4) Å, b = 8.5454(5) Å, c = 14.8075(9) Å, α = 105.157(2)°, β = 94.494(3)°, γ = 101.890(2)°, V = 747.5(2) Å3, Z = 1, Rgt(F) = 0.0332, wRref(F2) = 0.0790, T = 100(2) K.

Crystal Structure of (E)-3-(4-methoxyphenyl)-1-(2,3,4-tris(benzyloxy)-6-hydroxyphenyl)prop-2-en-1-one, C37H32O6

Abstract C37H32O6, monoclinic, P21/c (No. 14), a = 5.5354(7) Å, b = 16.983(2) Å, c = 31.211(4) Å, β = 91.535(8)°, V = 2932.9(7) Å3, Z = 4, Rgt(F) = 0.0584, wRref(F2) = 0.1738, T = 100 K.

Crystal structure of 3-bromo-4,6-dibenzyloxy-2-hydroxy acetophenone, C22H19BrO4

Abstract C22H19BrO4, triclinic, P1̅ (no. 2), a = 8.550(2) Å, b = 11.343(2) Å, c = 11.715(2) Å, ɑ = 102.02(3)°, β = 110.47(3)°, γ = 110.84(3)°, V = 920.2 Å3, Z = 2, Rgt(F) = 0.0368, wRref(F2) = 0.099, T = 100 K.

Bis(diphenyl-p-tolyl­phosphane-κP)(2-hy­droxy-3,5,7-bromo­cyclo­hepta-2,4,6-trienonato-κ2O,O′)copper(I)

The CuI atom in the title compund, [Cu(C7H2Br3O2)(C19H17P)2], is located on a twofold rotation axis; the 3,5,7-tribromotropolonate anion coordinates as a bidentate ligand with a bite angle of 76.42 (9)°. An intramolecular C—H⋯O interaction occurs. Within the crystal, extensive weak C—H⋯π interactions contribute to the herringbone pattern observed in the packing of the molecules.

(Nitrato-κO)tris­[tris­(4-fluoro­phen­yl)phosphane-κP]copper(I)

In the title complex, [Cu(NO3)(C18H12F3P)3], the ligating atoms define a distorted tetrahedon with the three tris(4-fluorophenyl)phosphane ligands in the basal positions and the nitrate ligand in the axial position. The intramolecular π–π interaction [centroid–centroid distance = 3.6113 (11) Å] between two of the 4-fluorophenyl groups is complemented by both C—H⋯F and C—H⋯O interactions with distances in the range 2.51–2.60 Å, resulting in a tight head-to-tail packing.

Bis(triphenyl­phosphine-κP)(tropolonato-κ2O,O′)silver(I) dichloro­methane solvate

The title compound, [Ag(C7H5O2)(C18H15P)2]·CH2Cl2, crystallizes with a distorted tetrahedral geometry about the AgI atom, defined by two O atoms from one tropolonate ligand and two P atoms from two triphenylphosphine ligands. It is an example of a new type of tropolone derivative that has not been characterized via solid-state methods.

(3,5,7-Tribromo­tropolonato-κ2O,O′)tris­(triphenyl­phosphine-κP)silver(I)

The title compound, [Ag(C7H2Br3O2)(C18H15P)3], a silver(I) derivative of 3,5,7-tribromotropolone, has three triphenylphosphine ligands coordinated to the silver centre, whereas the 3,5,7-tribromotropolonate anion coordinates as a bidentate ligand. The compound is an example of a five-coordinate silver complex containing a bidentate ligand.