(2,2′-Bipyridine-κ2N,N′)bis(4-chlorobenzoato-κO)zinc

IL 22 ( interleukin 22 )

A22 22..22

Four randomised controlled trials (RCTs) and one RCT metaanalysis are featured in the Journal this month. The latter is a review of trials of newer-generation antidepressants and cognitive–behavioural therapy (CBT) for adolescent depression (Dubicka et al, pp. 433–440). In an area of clinical practice plagued by controversy, the authors of this review were able to contribute the finding that ad...

5,5′-Dimethyl-2,2′-bipyridine

The asymmetric unit of the title compound, C(12)H(12)N(2), contains two half-mol-ecules related by an inversion center, the planes of their pyridine rings being oriented at a dihedral angle of 69.62 (4)°. In the crystal structure, a π-π contact between the pyridine rings [centroid-centroid distance = 3.895 (3) Å] may stabilize the structure. A weak C-H⋯π inter-action is also found.

2,2′-Dimethyl-4,4′-bipyridine

In the crystal structure of the title compound, C(12)H(12)N(2), the mol-ecule is twisted around the central C-C bond, with a dihedral angle of 8.32 (5)° between the mean planes of the pyridyl rings. The crystal structure is stabilized by arene stacking inter-actions, with a distance of 3.81 (1) Å between the ring centroids.

A22 22..22

Three papers in the Journal this month consider issues related to measuring, understanding and treating mental ill health in childhood. Baron-Cohen et al (pp. 500–509) undertook a study to establish the prevalence of autism-spectrum conditions in Cambridgeshire using two case ascertainment methods. First, a survey of individuals on the Special Educational Needs register and second, a screening ...