 
                SEM photographs 
				of 
				[Pb(3-pyc)(N3)(H2O)]n 
				
				nano-hedge balls.  | 
                
                  
				
				  
				    
				
				  
  
                  
                A 
				schematic diagram illustrating the structural conversion of 
				2D–3D coordination polymeric structures by thermal dehydration.  | 
                
                  
				
				     
				  
				
				
				SEM photograph of [Pb(3-pyc)Br]n  
				nanofibers. 
                
                   | 
                
                  
				
				   1   
				    
				 
				  
                                        
				2 
                  
                
				Schematic representation of the solid-state conversion of two 
				neighboring two-dimensional in 1 to form the 
				three-dimensional network in 2  | 
                
                  
				
				     
				
				  
				
				SEM photographs of [Pb2(2-pyc)2(Br)2]nanorods. 
                
                   |