29202
The equilibrium structure of vinylidene , estimated with an additivity scheme that includes treatment of correlation eects beyond CCSD ( T ) as well as relativistic and adiabatic ( diagonal Born - Oppenheimer correction ) contributions is rCC = 1 . 29820 . 0003 A ; rCH = 1 . 08440 . 0003 A ; and CCH = 120 . 050 . 05o , with zero - point rotational constants ( including vibrational contributions and electronic contributions to the moment of inertia ) estimated to be A0 = 9 . 49250 . 0150 cm1 ; B0 = 1 . 32170 . 0017 cm1 and C0 = 1 . 16020 . 0016 cm1 .
 Chemical: vinylidene; Chemical: CCH
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: vinylidene; Chemical: CCH