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ISSN: 2414-3146

July 2025 issue

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Cover illustration: The RhIII complex (nitrito-κO)(nitro-κN)(nitrosyl-κN)bis­(tri­phenylphosphane-κP)rhodium(III), [Rh(NO)(NO2)2(C18H15P)2], is a rare example of a mononuclear compound with nitrito, nitro and nitrosyl ligands. The complex is polymorphic with two distinct crystals recovered, one of which is reported here. The crystal structure of the other crystal did not refine in a satisfactory manner so its structural set-up remains an open question. See: Albert, Gau & Rajaseelan [IUCrData (2025). 8, x250598].

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inorganic compounds


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The oxalate-bridged alkali/lanthanide bimetallic coordination polymer is formed by linking Pr3+ and K+ cations atoms through oxalate ligands using a μ4-chelating/bridging coordination mode.

metal-organic compounds


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The title RhIII complex is a rare example of a mononuclear compound gathering nitrito, nitro and nitrosyl ligands.

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The F atoms in the octa­hedral [SnF2Cl4]2– complex anion of the title compound are in a cis orientation.

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The Cu2+ cation in the polymeric title compound has an N2O3 coordination set, inter­mediate between a square pyramid and a trigonal bipyramid.

organic compounds


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A naphtho­[1,8-de][1,3,2]-di­aza­borinine-substituted anthracene structure is reported.

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A chiral compound, m-TAP, was synthesized and its crystal structure was determined, revealing key stereochemical and supra­molecular features.

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Intra­molecular O1—H1⋯N3 hydrogen bonding occurs in the title mol­ecule and inter­molecular O—H⋯O hydrogen bonds form chains parallel to the b axis.

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Mol­ecules of the title compound, C17H19ClN4O, are essentially planar, the dihedral angles between the planes of the tetra­aza­indene ring system and the benzene ring and between the benzene ring and the hex­yloxy chain being 1.56 (10)° and 5.02 (17)°, respectively. In the crystal, pairs of mol­ecules are connected via π–π inter­actions between the phenyl ring and the triazolopyridazine moiety.

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The title compound consists of almost planar mol­ecules with the chlorine atom protruding from this plane.

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The title compound was obtained in good yield by a standard one-pot method. The mol­ecule has the following substituents: a chlorine atom at the 4-position, a phenyl group at the 2-position, and an aldehyde (–CHO) group at the 3-position of the 2H-chromene ring system.
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