Coordination compounds are formed by the union of a metal ion (usually a transition metal) with a nonmetallic ion or molecule. For example, when white, anhydrous copper sulfate, CuSO4, is exposed to ammonia gas, a deep blue crystalline product is...

A complex in chemistry usually is used to describe molecules or ensembles formed by the combination of ligands and metal ions. Originally, a complex implied a reversible association of molecules, atoms, or ions through weak chemical bonds. As applied to...

Teedra, a saucy soprano whose voice is reminiscent of Amerie (if she had personality), is a perfect addition to contemporary R&B.; A former assistant stylist to R. Kelly and the aforementioned No Doubt, this Louisiana native's style yields some good material - a light sound...

Firefighters who rescued dozens of people through windows of a burning three-story apartment complex searched early Wednesday for anyone who might not have escaped.No deaths were immediately reported from the fire that injured 24 people early Tuesday, and firefighters did not know whether anyone was...

A man facing eviction from a luxury apartment complex shot and killed the manager and then himself after writing an e-mail to friends saying he had died, police said. At least two other people were injured.Police said the gunman first shot a neighbor through his...

A man facing eviction from a luxury apartment complex shot and killed the manager and then himself after writing an e-mail to friends saying he had died, police said. At least two other people were injured.Police said the gunman first shot a neighbor through his...