Dichlorido{2-[2-(dimethyl­ammonio)ethyl­imino­meth­yl]-6-methoxy­phenolato}zinc(II)

The structure of the title complex, [ZnCl2(C12H18N2O2)], contains a zwitterionic Schiff base ligand. The complex adopts a distorted tetra­hedral coordination geometry around the metal centre with the Schiff base ligand coordinated in a bidentate fashion via the imine N and phenolate O atoms. In the crystal, inter­molecular N—H⋯O and C—H⋯Cl hydrogen bonds link the mol­ecules into chains parallel to the c-glide planes

Bis{N′-[1-(2-pyrid­yl)ethyl­idene-κN]benzohydrazidato-κ2 N′,O}nickel(II)

In the title complex, [Ni(C14H12N3O)2], the NiII atom lies at the centre of a distorted octahedron formed by two tridentate hydrazone ligands. Inter­molecular hydrogen bonds of the type C—H⋯X (X = N, O) link the complexes into a two-dimensional network

Bis[N′-(2-pyridylmethyl­ene-κN)benzo­hydrazide-κN′]bis­(thio­cyanato-κN)cobalt(II)

In the title complex, [Co(NCS)2(C13H11N3O)2], the CoII centre adopts a distorted octa­hedral coordination geometry with two cis-bidentate Schiff base ligands and two cis thio­cyanate ligands. The Schiff base ligand coordinates via the imine N and pyridine N atoms. The CoII atom lies on a crystallographic twofold rotational axis. Non-classical inter­molecular C—H⋯O hydrogen bonds link the complex mol­ecules into chains along [001]

{N′-[1-(2-Pyridyl)ethylidene-κN]benzohydrazidato-κ2N′,O}{N′-[1-(2-pyridyl)ethylidene-κN]benzohydrazide-κ2N′,O}copper(II) trichloroacetate

In the title complex, [Cu(C14H13N3O)(C14H12N3O)](CCl3COO), the central Cu(II) ion exhibits a distorted octahedral geometry with the two ligands coordinating in an meridional format. The N4O2 ligand environment is defined by two benzoyl O atoms, two pyridyl N atoms and imino N atoms. As evidenced by the bond lengths, the two benzohydrazone ligands exist in distinctively different forms, one of them as a regular neutral ligand and the other as an anionic enolate arising from deprotonation. The much longer Cu—O bond and longer Cu—N bond lengths in the neutral benzohydrazone ligand imply weak ligation in comparison with the anionic enolate form. The acute angles of the five-membered rings cause a significant deviation from a regular octahedral geometry

d-Penicillamine induced elastosis perforans serpiginosa with involvement of glans penis

Elastosis perforans serpiginosa (EPS) is an unusual perforating disorder characterized by extrusion of altered elastic fibers through the epidermis. Clinically, it presents as keratotic papules with a tendency for serpiginous or annular distribution that most commonly involves the sides of the neck and the back. However, involvement of the penis has rarely been reported. We present a case of EPS involving the neck, axilla, and glans penis in a 42-year-old man who had received long-term d-penicillamine treatment for Wilson disease. Skin biopsy revealed perforating channels containing numerous altered elastic fibers, with a characteristic “bramble brush” or “lumpy-bumpy” appearance as demonstrated by an elastin stain. The latter is thought to be pathognomonic for penicillamine-induced degenerative elastosis. These degenerative changes occurring in glans penis have rarely been described in the literature. Prompt recognition of the rare presentation could lead to early discontinuation of the offending drug, to prevent further sequelae