Fig. 5: Structural comparison of \({p}_{a,rc}[{CO}_{2}]\) and \({p}_{a,rc}[CO+{O}_{2}]\) phases. | Communications Chemistry

Fig. 5: Structural comparison of \({p}_{a,rc}[{CO}_{2}]\) and \({p}_{a,rc}[CO+{O}_{2}]\) phases.

From: Prediction of an alternative high-pressure route to polymeric carbon dioxide as a metastable energetic material

Fig. 5: Structural comparison of 
                        $${p}_{a,rc}[{CO}_{2}]$$
                        
                          
                            
                              p
                            
                            
                              a
                              ,
                              r
                              c
                            
                          
                          
                            [
                            
                              
                                
                                  C
                                  O
                                
                                
                                  2
                                
                              
                            
                            ]
                          
                        
                       and 
                        $${p}_{a,rc}[CO+{O}_{2}]$$
                        
                          
                            
                              p
                            
                            
                              a
                              ,
                              r
                              c
                            
                          
                          
                            [
                            
                              C
                              O
                              +
                              
                                
                                  O
                                
                                
                                  2
                                
                              
                            
                            ]
                          
                        
                       phases.The alternative text for this image may have been generated using AI.

Comparative analysis of the structural features of the recovered polymeric phases of CO2 (pa,rc[CO2] at 200 K) and CO+O2 (pa,rc[CO+O2] at 300 K). a Pairwise radial distribution function, g(r), for both systems at near-ambient pressures. b Comparison of chain structures, with carbon and oxygen atoms shown in gray and red, respectively. Here, 5l, 5n, and 6i indicate 5-member chain-linked, 5-member networked, and 6-member interlocked rings, respectively. c Partial crystal orbital Hamiltonian population (pCOHP) for pa[CO+O2] for C-centered (top-left) and O-centered (top-right) bondings, as well as the integrated COHP as a function of bond order for selected pressures. d Nearest neighbor coordination number (NNCN) histograms for C−O, O−C, O−O, and C−C pairs.

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