Trigonal Bipyramidal Shape

SKU: 69180

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PCl5 (phosphorus pentachloride) is a molecule representative of trigonal bipyramidal bond angle geometry & is roughly 300mm (12") high on the central axis when constructed with Unit model parts.

The atoms in this VSEPR Large Classroom Model set can form ball & stick models of any geometry. Go to the bottom of page Unit Molecular Models for an overview or click on the Instructions/Safety tab to see videos on how to construct any molecular geometry.

Compare this to the model from the smaller Orbit Basic VSEPR theory set; the same structure is only 50mm (2") along the axis of the molecule.

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Related information or images
Large Basic VSEPR Models

Large Basic VSEPR Models
VSEPR Linear Geometry

2 Pegs-Linear
VSEPR Bent Angle Geometry

2 Pegs-Bent Angle
VSEPR Trigonal Planar Geometry

3 Pegs-Trigonal Planar
VSEPR Tetrahedral Geometry

4 Pegs-Tetrahedral
VSEPR Octahedral Geometry

Octahedral
Parts
P/NDescriptionQTY
69150-60Unit Blue Plastic Bond, 60mm4
69150-80Unit Blue Plastic Bond, 80mm18
69388CAtom, Unit, 25mm, white (hydrogen)4
69390CAtom, Unit, 45mm, blue (nitrogen)1
69391CAtom, Unit, 45mm, red (oxygen)2
69392CAtom, Unit, 45mm, black (carbon)3
69393CAtom, Unit, 45mm, green (halogen)16
69395CAtom, Unit, 45mm, yellow (sulfur)2
69400Unit Bond Pegs: 72 pieces: (36 tetra; 24 radial;12 polar)1
Reviews (1)
2016-12-13

I recently moved to the UK from the US and needed some classroom-demonstration models. In the US, I had used the horrible polystyrene balls and wooden sticks that were/are so prevalent. They were awkward to use and very fragile. Indeed, after only typically 2-3 uses of a given central atom, at least one "hole" for the sticks had broken. No such issues with the Indigo kit. While it was initially a little tiresome to set up the 5- and 6- coordinate central atoms, they are sturdy and have not (to date) broken. They are easy to transport and visually more appealing than the ones I used previously. While the price might seem a little steep, it is worth it to have a great classroom tool and I recommend them wholeheartedly.

— Simon Bott
— Indigo:

Thanks for the feedback. It can indeed be a bit tedious setting up the various hole configurations but that is also the beauty of it. No other set is as versatile in creating both standard VSEPR geometries and ones only found in crystals.

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