There are a number of C-containing entities which can donate electrons. The C atom of the CN - anion contains a lone pair which can be transferred to a Lewis acid. Even if the acid molecule is anionic, short-range attractive forces can overcome the long-range ion-ion repulsion to approach close...

Out-based aid (OBA) involves the use of explicit, performance-based subsidies to deliver public services such as water and sanitation. It is used to fund the gap between people's willingness or ability to pay for a service whose delivery is deemed worth subsidizing and the cost of providing that...