Vanadium has electron configuration [Ar]4s^23d^3, which means 5 electrons in its valence shell. When you add 6 CO ligands to make the hexacarbonyl, that adds 2X6 = 12 to make a total effective atomic number (EAN) of 17. Many metal carbonyls like to have a full EAN of 18. V(CO)6 can achieve this by a 1 electron reduction to make V(CO)6(1-) with now an EAN of 18. Since the CO’s remain neutral, the 1- charge formally then resides on the V, which thus has a valence of -1.
Vanadium has electron configuration [Ar]4s^23d^3, which means 5 electrons in its valence shell. When you add 6 CO ligands to make the hexacarbonyl, that adds 2X6 = 12 to make a total effective atomic number (EAN) of 17. Many metal carbonyls like to have a full EAN of 18. V(CO)6 can achieve this by a 1 electron reduction to make V(CO)6(1-) with now an EAN of 18. Since the CO’s remain neutral, the 1- charge formally then resides on the V, which thus has a valence of -1.
See Mark B Fischer's answer to How is the oxidation state of vanadium in [V(CO) 6] - 1?
See Mark B Fischer's answer to How is the oxidation state of vanadium in [V(CO) 6] - 1?
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Vanadium has electron configuration [Ar]4s^23d^3, which means 5 electrons in its valence shell. When you add 6 CO ligands to make the hexacarbonyl, that adds 2X6 = 12 to make a total effective atomic number (EAN) of 17. Many metal carbonyls like to have a full EAN of 18. V(CO)6 can achieve this by a 1 electron reduction to make V(CO)6(1-) with now an EAN of 18. Since the CO’s remain neutral, the 1- charge formally then resides on the V, which thus has a valence of -1.
Vanadium has electron configuration [Ar]4s^23d^3, which means 5 electrons in its valence shell. When you add 6 CO ligands to make the hexacarbonyl, that adds 2X6 = 12 to make a total effective atomic number (EAN) of 17. Many metal carbonyls like to have a full EAN of 18. V(CO)6 can achieve this by a 1 electron reduction to make V(CO)6(1-) with now an EAN of 18. Since the CO’s remain neutral, the 1- charge formally then resides on the V, which thus has a valence of -1.
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