Magnetostructural Correlations in .mu.2-1,1-N3 Bridged, Dinuclear Copper(II) Complexes. 1. Ferromagnetic and Antiferromagnetic Coupling Associated with the Azide Bridge. X-ray Crystal Structures of [Cu2(DMPTD)(.mu.2-N3)(.mu.2-Cl)Cl2].cntdot.CH3CN, [Cu2(DMPTD)(.mu.2-N3)2(N3)2], [Cu2(DIP)(.mu.2-N3)(.mu.2-Cl)Cl2].cntdot.0.5CH3OH, [Cu2(PAP46Me-H)(.mu.2-N3)(N3)2].cntdot.0.33H2O, [Cu2(PAP)(.mu.2-N3)Cl3].cntdot.CH2Cl2, [Cu2(PAP)(.mu.2-N3)(N3)(NO3)(CH3OH)](NO3).cntdot.CH3OH, [Cu2(PPD3Me)(.mu.2-N3)Cl3(H2O)1.5], and [Cu2(PPD)(.mu.2-N3)(NO3)3(H2O)1.6]