A stannide can refer to an intermetallic compound containing tin combined with one or more other metals; an anion consisting solely of tin atoms or a compound containing such an anion, or, in the field of organometallic chemistry an ionic compound containing an organotin anion (e.g.see an alternative name for such a compound is stannanide.)

Binary alkali and alkaline earth stannides

When tin is combined with an alkali

Alkali

In chemistry, an alkali is a basic, ionic salt of an alkali metal or alkaline earth metal element. Some authors also define an alkali as a base that dissolves in water. A solution of a soluble base has a pH greater than 7. The adjective alkaline is commonly used in English as a synonym for base,...

 or alkaline earth metal some of the compounds formed have ionic structures containing monatomic or polyatomic tin anions (Zintl ions), e.g. Sn⁴⁻ in Mg₂Sn Sn₉⁴⁻in K₄Sn₉.
Even with these metals not all of the compounds formed can be considered to be ionic with localised bonding, for example Sr₃Sn₅, a metallic compound,contains {Sn₅} square pyramidal units.

Ternary alkali and alkaline earth stannides

Ternary (where there is an alkali or alkaline earth metal, a transition metal as well as tin e.g. LiRh₃Sn₅ and MgRuSn₄ ) have been investigated.

Other metal stannides

Binary (involving one other metal) and ternary (involving two other metals) intermetallic stannides have been investigated.
Niobium stannide

Niobium-tin

Niobium-tin or triniobium-tin is a metallic chemical compound of niobium and tin , used industrially as a type II superconductor. This intermetallic compoundis a A15 phases superconductor...

, Nb₃Sn is perhaps the best known superconducting tin intermetallics. This is more commonly called "niobium-tin".

Stannide, Sn_x^y- ions

Some examples of stannide Zintl ions are listed below. Some of them contain 2 centre- 2 electron bonds (2c-2e), others are "electron deficient" and bonding sometimes can be described using polyhedral skeletal electron pair theory

Polyhedral skeletal electron pair theory

In chemistry the polyhedral skeletal electron pair theory provides electron counting rules useful for predicting the structures of clusters such as borane and carborane clusters. The electron counting rules were originally formulated by Kenneth Wade and were further developed by D. M. P. Mingos and...

 (Wade's Rules) where the number of valence electrons contributed by each tin atom is considered to be 2 (the s electrons do not contribute). There are some examples of silicide

Silicide

A silicide is a compound that has silicon with more electropositive elements.Silicon is more electropositive than carbon. Silicides are structurally closer to borides than to carbides....

 and plumbide

Plumbide

A plumbide can refer to one of two things: an intermetallic compound that contains lead, or a Zintl phase compound with lead as the anion.-Zintl phase:Plumbides can be formed when lead forms a Zintl phase compound with a more metallic element...

 ions with similar structures, for example tetrahedral Si₄⁴⁻, the chain anion {Si²⁻)_n, Pb₄⁴⁻ and Pb₉⁴⁻.

• Sn⁴⁻ found for example in Mg₂Sn
• Sn₄⁴⁻, tetrahedral with 2c-2e bonds e.g. in CsSn.
• Sn₄²⁻, tetrahedral closo- cluster with 10 electrons (2n+2)
• {Sn²⁻)_n zig-zag chain polymeric anion with 2c-2e bonds found for example in BaSn
• Sn₅²⁻closo-cluster, 12 electrons (2n+2), (i.e. trigonal bipyramidal) in (2,2,2-crypt-Na)₂Sn₅
• (Sn₈⁴⁻)_n polymeric "2-D" anion in NaSn₂
• Sn₉⁴⁻ nido-cluster 22 electrons, (2n+4)(capped square antiprismatic) with as per polyhedral skeletal electron pair theory
  Polyhedral skeletal electron pair theory
  In chemistry the polyhedral skeletal electron pair theory provides electron counting rules useful for predicting the structures of clusters such as borane and carborane clusters. The electron counting rules were originally formulated by Kenneth Wade and were further developed by D. M. P. Mingos and...
  
  , in the intermetallic K₄Sn₉, and a distorted ion in the salt Na₄Sn₉.7en (en = ethylenediamine)
• Sn₉³⁻ a paramagnetic, 21 electrons, closo- cluster anion ( D_3h symmetry)( 1 more electron than the 20 (2n+2) predicted by polyhedral skeletal electron pair theory
  Polyhedral skeletal electron pair theory
  In chemistry the polyhedral skeletal electron pair theory provides electron counting rules useful for predicting the structures of clusters such as borane and carborane clusters. The electron counting rules were originally formulated by Kenneth Wade and were further developed by D. M. P. Mingos and...
  
  
• (Sn₁₂⁷⁻)_n polymeric "2-D" anion in Na₇Sn₁₂