Molybdenum blue is a term applied to:
- reduced heteropolymolybdate complexes, polyoxometalates containing Mo(V), Mo(VI), and a hetero atom such as phosphorus or silicon
- reduced isopolymolybdate complexes, polyoxometalates containing Mo(V), Mo(VI) formed when solutions of Mo(VI) are reduced
- a blue pigment containing molybdenum(VI) oxide
The "heteropoly-molybdenum blues", are used extensively in analytical chemistry and as catalysts. The formation of "isopoly-molybdenum blues" which are intense blue has been used as a sensitive test for reducing reagents. They have recently been shown to contain very large anionic species based on the so-called "big wheel" containing 154 Mo atoms, with a formula 14−.
The molybdenum blue pigment is historically documented but may not be in use today.
Read more about Molybdenum Blue: Heteropoly-molybdenum Blues, Uses in Qualitative Analysis, Isopoly Molybdenum Blues, The Big Wheel, The Spherical Vesicle, Molybdenum Blue Pigment
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