In the title compound, [Pd(C(37)H(55)P(2)Si)Cl], the Pd atom has a distorted square-planar geometry. The two five-membered rings adopt envelope conformations, while the four cyclo-hexane rings have chair conformations. The two planar aromatic rings are oriented at a dihedral angle of 28.79 (3)°.

The mol-ecule of the title compound, C(29)H(20)N(2)O(3), contains four fused rings, three are six-membered rings and one is the five-membered imidazole ring. The fused-ring system is linked to two benzyl groups. The four fused rings are folded around the O=C⋯C=O direction of the anthraquinone, with a dihedral angle of 16.36 (8)° between the two terminal rings (A and D). The imidazole ring (D) i...

Abstract The synthesis and characterization of complex salts [M(η 5 −C Me )Cl(tppz)]PF 6 (M=Rh, 1 ; M=Ir, 2 tppz=2.3.5.6‐tetra(2'‐pyridyl)pyrazine) are described. Compounds were obtained by bridge‐splitting reactions [{M(η )(μ−Cl)Cl} ] Ir) with tppz in MeOH at room temperature spectroscopically characterized. molecular structures the crystal confirmed single‐crystal X‐ray diffraction. Unexpecte...

The introduction of multiple carbon rings is one of the common ways for graphene modification. Starting from warped C80H30 nanographene, which consists of a number of six- and seven-membered carbon rings (C6 and C7) centering at a five-membered carbon ring (C5), we explored the structure and property variations of its derivatives in which their C7 rings were gradually replaced with C6 rings. Wi...

In the title compound, C(23)H(26)FN(3)O(6)S, the two terminal aromatic rings form a dihedral angle of 49.26 (12)°. The cyclo-hexane ring adopts a chair conformation and the five-membered ring is essentially planar, with a maximum deviation from planarity of 0.0456 (19) Å. The dihedral angles between the five-membered ring and the meth-oxy-benzene and fluoro-benzene rings are 33.56 (11) and 81.9...

The mol-ecule of the title compound, C(12)H(14)N(4), lies about a crystallographic inversion centre. The five- and six-membered rings are twisted from each other, forming a dihedral angle of 18.06 (7)°. In the crystal structure, neighbouring mol-ecules are linked by inter-molecular N-H⋯N hydrogen bonds into one-dimensional infinite chains forming 18-membered rings with R(2) (2)(18) motifs. The ...

We have investigated the radiation induced generation of paramagnetic point defects in high surface area sol-gel silicates containing various concentrations of the Raman active 608 cm -~ D 2 band attributed to strained cyclic trisiloxanes (3-membered rings). Our results suggest a correlation between the concentration of the 3-membered rings with the concentration of radiation induced paramagnet...

THE TITLE COMPOUND [SYSTEMATIC NAME: 17-(5,6-di-methyl-hept-6-en-2-yl)-4,4,10,13,14-penta-methyl-1,5,6,10,11,12,13,15,16,17-deca-hydro-2H-cyclo-penta-[α]phenanthren-3(4H,9H,14H)-one], C(31)H(50)O, is a triterpenoid which was isolated from Skimmia laureola. The three six-membered rings adopt chair, slightly distorted half-chair and distorted boat conformations, and the five-membered ring is in a...

The title steroid, C(31)H(53)NO(4), was prepared from the corresponding 5α,6α-epoxy-cholestane. The conformation of the six-membered rings is close to a chair form, while the five-membered ring adopts a twist conformation. The hydroxyl and acetamide groups are in axial positions. The nucleophilic species bound to the steroid nucleus at position 6 by the β-face, whereas the hydroxyl group at pos...

In the mol-ecule of the title compound, C(16)H(15)FN(2)O(2), the benzene rings are oriented at a dihedral angle of 88.61 (3)°. The five-membered ring adopts an envelope conformation. Intra-molecular C-H⋯N hydrogen bonds result in the formation of two planar five-membered rings. In the crystal structure, inter-molecular N-H⋯O and C-H⋯F hydrogen bonds link the mol-ecules, forming R(2) (2)(8) and ...