1. An electrophotographic element comprising an electrically conducting support having thereon a photoconductive composition comprising an electrically insulating, film- forming polymeric binder and a Group Va organo-metallic photoconductive compound having attached to a Group Va metal atom at least one amino-aryl group.

2. An electrophotographic element comprising an electrically conducting support having thereon a photoconductive composition comprising an electrically insulating, film-forming polymeric binder and a Group Va organo-metallic photoconductive compound having attached to a Group Va metal atom (1) at least one amino-aryl group, and (2) at least one substituent selected from the group consisting of a hydrogen atom, an oxygen atom, an alkyl radical and an aryl radical.

3. An electrophotographic element comprising an electrically conducting support having thereon a photoconductive composition comprising an electrically insulating, film-forming polymeric binder and a photoconductor represented by the formula: wherein: T is an amino radical; Ar is an aryl radical; Mb is a Group Va metal; and E and J are selected from the group consisting of a hydrogen atom, an alkyl radical, an aryl radical and, when taken together, an oxygen atom.

4. An electrophotographic element comprising an electrically conducting support having thereon a photoconductive composition comprising an electrically insulating, film-forming polymeric binder and a photoconductor represented by the formula: wherein: T is an amino radical; Ar is an aryl radical; M is a Group Va metal; and L and Q are each selected from the group consisting of a hydrogen atom, an alkyl radical and an aryl radical; and E and J are each selected from the group consisting of an alkyl radical, an aryl radical and, when taken together, an oxygen atom.

5. A photoconductive composition comprising an electrically insulating, film-forming polymeric binder containing at least 1 percent by weight of a Group Va organo-metallic photoconductive compound having attached to a Group Va metal atom (1) at least one amino-aryl group, and (2) at least one substituent selected from the group consisting of a hydrogen atom, an oxygen atom, an alkyl radical and an aryl radical.

6. A photoconductive composition comprising an electrically insulating, film-forming polymeric binder containing at least 1 percent by weight of a photoconductor represented by the formula: wherein: T is an amino radical; Ar is an aryl radical; Mb is a Group Va metal; L and Q are each selected from the group consisting of a hydrogen atom, an alkyl radical and an aryl radical; and E and J are each selected from the group consisting of an alkyl radical, an aryl radical and, when taken together, an oxygen atom.

7. A photoconductive composition comprising an electrically insulating, film-forming polymeric binder containing at least 1 percent by weight of a photoconductor represented by the formula: wherein: R1 and R2 are alkyl radicals having one to eight carbon atoms; R3 is selected from the group consisting of a hydrogen atom and an alkyl radical having one to eight carbon atoms; Mb is a Group Va metal; and E and J are each selected from the group consisting of an alkyl radical having one to eight carbon atoms, a phenyl radical and, when taken together, an oxygen atom.

9. A photoconductive composition comprising an electrically insulating, film-forming polymeric binder containing at least 1 percent by weight of a photoconductor represented by the formula: wherein: R1 and R2 are alkyl radicals having one to eight carboN atoms; Mb is a Group Va metal; L and Q are each selected from the group consisting of a hydrogen atom, an alkyl radical having one to eight carbon atoms and a phenyl radical; and E and J are each selected from the group consisting of an alkyl radical having one to eight carbon atoms, a phenyl radical and, when taken together, an oxygen atom.

11. An electrophotographic element comprising an electrically conducting support having thereon a photoconductive composition comprising an electrically insulating, film-forming polymeric binder and a photoconductor represented by the formula: wherein: R1 and R2 are alkyl radicals having one to eight carbon atoms; R3 is selected from the group consisting of a hydrogen atom and an alkyl radical having one to eight carbon atoms; Mb is a Group Va metal; and E and J are each selected from the group consisting of an alkyl radical having one to eight carbon atoms, a phenyl radical and, when taken together, an oxygen atom.

13. An electrophotographic element comprising an electrically conducting support having thereon a photoconductive composition comprising an electrically insulating, film-forming polymeric binder and a photoconductor represented by the formula: wherein: R1 and R2 are alkyl radicals having one to eight carbon atoms; Mb is a Group Va metal; L and Q are each selected from the group consisting of a hydrogen atom, an alkyl radical having one to eight carbon atoms and a phenyl radical; and E and J are each selected from the group consisting of an alkyl radical having one to eight carbon atoms, a phenyl radical and, when taken together, an oxygen atom.