Insulinoma: A Rare Cause of Hypoglycemia in Childhood.

BACKGROUND Insulinomas are pancreatic neuroendocrine tumors that cause non-ketotic hypoglycemia due to hyperinsulinism; they are extremely rare, especially in children. CASE REPORT We present a case of a sporadic insulinoma in an 11-year-old boy who had episodes of self-limited drowsiness and behavior changes over a 3-month period, thought to be caused by psychological issues. Non-ketotic hypoglycemia was confirmed at our center.

A route to small clusters: a twisted half-hexagram-shaped M(OH) cluster and its capacity for hosting closed-shell metals.

By combining different oxidation states, coordination indices and bridging systems, it has been possible to obtain the structurally novel M(OH) cluster core (M = transition metal) found in the organometallic compound (NBu)[PtPt(CCl)(μ-OH)(μ-OH)] (1). The cluster is formed by two (μ-OH) and two (μ-OH) units that bond platinum atoms in different oxidation states. The cluster core geometry can best be described as a half-hexagram.

Homoleptic organocobalt(III) compounds with intermediate spin.

Homoleptic organocobalt(III) compounds with formula [NBu4][Co(III)(C6X5)4] [X = F (3), Cl (4)] were obtained in reasonable yields by chemical oxidation of the corresponding divalent species [NBu4]2[Co(II)(C6X5)4] [X = F (1), Cl (2)]. The [Co(III)(C6X5)4](-)/[Co(II)(C6X5)4](2-) couples are electrochemically related by quasi-reversible, one-electron exchange processes at moderate potential: E1/2 = -0.29 (X = F) and -0.