Stannic Oxide Sn03



As in Stannous Oxide, SnO, we have an atom of Tin which consists of a central globe, Nel20, eight funnels opening on the faces of an octahedron and six spikes pointing to the corners of the octahedron.

In SnO, the two Oxygen atoms enter inside the central globe, which is hollow. They stand nearly upright but inclined slightly to each other. Fig. 180. The 20 Ad6 groups in the Nel20 stand upright, as in SnO, but instead of pointing to the centre those at one sid2 aim at one Oxygan pillar and those of the other side aim at the second pillar.

When the molecule is made to spin very slowly so that it can be observed, the Oxygen atoms are found to spin by themselves. As they spin past, the Ad6 nearest to one Oxygen atom points to it and then to the next Oxygen, thus making the Ad6 move in a waggling, or oscillating back and forth movement, as the two columns come round.

Attempts were made to add more Oxygen atoms. If a third Oxygen atom is added the Ad6 groups loose their cohesion and the whole thing disintegrates.

Four Oxygens will not stick at all. If four Hydroxyl OH groups are tried we get Sn(OH)4 but this is unstable and remains only so long as the will holds them. If the will is released SnO, is formed and the remaining Oxygen atoms go off with the Hydrogen forming 2HtO.

The diagram of SnO, is seen to be the same as that of SnO in essentials. Two Oxygen atoms are shown inside the Nel20 sphere and the whole is a little larger.

Only one side of the octahedron is drawn and therefore four funnels and two spikes are not shown.

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