Abstract: The present invention provides type-I and II carbon-based clathrate compounds stabilized by boron, including a boron-substituted, carbon-based framework with guest atoms encapsulated within the clathrate lattice. In one embodiment, the invention provides a carbon-based type-I clathrate compound of the formula Ca8BxC46-x.

Abstract: The present invention provides carbon-based clathrate compounds, including a carbon-based clathrate compound that includes a clathrate lattice with atoms of at least one element selected from the group consisting of carbon and boron as a host cage structure and guest atoms encapsulated within the clathrate lattice. The guest atoms can constitute single elements or multiple distinct elements. In one embodiment, the invention provides a carbon-based clathrate compound of the formula NdB3C3. In another embodiment, the invention provides a carbon-based clathrate-like compound of the formula CaB3C3. In another embodiment, the invention provides a carbon-based clathrate compound of the formula NaxSr(1-x)B3C3.

Abstract: The present invention provides type-I and II carbon-based clathrate compounds stabilized by boron, including a boron-substituted, carbon-based framework with guest atoms encapsulated within the clathrate lattice. In one embodiment, the invention provides a carbon-based type-I clathrate compound of the formula Ca8BxC46-x.

Abstract: The present invention provides carbon-based clathrate compounds, including a carbon-based clathrate compound that includes a clathrate lattice with atoms of at least one element selected from the group consisting of carbon and boron as a host cage structure; guest atoms encapsulated within the clathrate lattice; and, substitution atoms that may be substituted for at least one portion of the carbon and boron atoms that constitute the clathrate lattice. In one embodiment, the invention provides a carbon-based clathrate compound of the formula LaB3C3.

Abstract: A novel bulk form of 4H-Si, a crystalline allotrope of silicon and a novel method of manufacture. The novel material consists of highly oriented microcrystals of silicon in the 4H structure with no disordered material. The 4H-Si is derived from heating a second novel material Si24 under proper conditions. The allotrope of silicon is produced as bulk, microcrystalline agglomerates.

Abstract: The present invention provides carbon-based clathrate compounds, including a carbon-based clathrate compound that includes a clathrate lattice with atoms of at least one element selected from the group consisting of carbon and boron as a host cage structure; guest atoms encapsulated within the clathrate lattice; and, substitution atoms that may be substituted for at least one portion of the carbon and boron atoms that constitute the clathrate lattice. In one embodiment, the invention provides a carbon-based clathrate compound of the formula LaB3C3.

Abstract: The present invention provides carbon-based clathrate compounds, including a carbon-based clathrate compound that includes a clathrate lattice with atoms of at least one element selected from the group consisting of carbon and boron as a host cage structure; guest atoms encapsulated within the clathrate lattice; and, substitution atoms that may be substituted for at least one portion of the carbon and boron atoms that constitute the clathrate lattice. In one embodiment, the invention provides a carbon-based clathrate compound of the formula LaB3C3.

Abstract: The present invention provides carbon-based clathrate compounds, including a carbon-based clathrate compound that includes a clathrate lattice with atoms of at least one element selected from the group consisting of carbon and boron as a host cage structure; guest atoms encapsulated within the clathrate lattice; and, substitution atoms that may be substituted for at least one portion of the carbon and boron atoms that constitute the clathrate lattice. In one embodiment, the invention provides a carbon-based clathrate compound of the formula LaB3C3.

Abstract: A new graphitic material has the empirical formula C3N3P and comprises triazine rings bound together by phosphorus atoms, and/or other 5- or 6-membered rings with various carbon, nitrogen, and phosphorous connectivity. The material is made by polymerizing P(CN)3, for example by using a temperature of at least 220° C. and an elevated pressure, optionally as high as 1500° C. and 12 GPa.

Abstract: A new graphitic material has the empirical formula C3N3P and comprises triazine rings bound together by phosphorus atoms, and/or other 5- or 6-membered rings with various carbon, nitrogen, and phosphorous connectivity. The material is made by polymerizing P(CN)3, for example by using a temperature of at least 220° C. and an elevated pressure, optionally as high as 1500° C. and 12 GPa.