The First Red Azo Lake Pigment whose Structure is Characterized by Single Crystal Diffraction.
A model for red azo pigment Ca4B was characterized structurally using synchrotron radiation. This highly anisotropic ladder structure represents a new structural class in azo pigment chemistry. The picture shows that the calcium atoms coordinate in a complex manner to three azo ligands (one terdentate, one bidentate, and one monodentate) and two water molecules simultaneously.
Kennedy
AR
Department of Pure and Applied Chemistry University of Strathclyde 295 Cathedral Street, Glasgow G1 1XL (UK).
McNair
C
Smith
WE
Chisholm
G
Teat
SJ