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5-Membered Rings : E : Envelope - Phi = k X 36 T : Half Chair- Phi = k X 36 + 18 6-Membered Rings : C : Chair - Th = 0.0 H : Half-Chair- Th = 50.8; Phi = k X 60 + 30 E : Envelope - Th = 54.7; Phi = k X 60 S : Screw-Boat- Th = 67.5; Phi = k X 60 + 30 B : Boat - Th = 90.0; Phi = k X 60 T : Twist-Boat- Th = 90.0; Phi = k X 60 + 30 7-Membered Rings : C : Chair TC : Twist-Chair B : Boat TB : Twist-Boat ÈçºÎÅжÏÊÇʲô¹¹Ïó£¿ ±ÈÈçÎÒµÄÒ»¸ö»¯ºÏÎïÖУº Q(2) = 0.7793(19) Ang., Phi(2) = 277.10(13) Deg Q(3) = 0.2019(19) Ang., Phi(3) = 348.3(5) Deg Total Puckering Amplitude Q = 0.8052(19) Ang. Conformational Analysis (G.G. Evans & J.A. Boeyens, Acta Cryst. (1989), B45, 581-590) Coefficients of Primitive and Normalised Forms M Primitive Coefficient Angular Value ------------------------------------------- CosForm 2 0.433 0.439 22.0 SinForm 0.351 0.356 21.0 CosForm 3 0.018 0.019 28.0 SinForm 0.184 0.186 27.0 ÊÇÒ»¸öÆßÔª»·£¬ÊÇʲô¹¹Ïó£¬ÈçºÎÅжϣ¿ |
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ÎåÔª»·Ò»°ãlis»á¸ø³ö£¬ÄãÔÚlisÎļþÖÐÎåÔª»·Ï·½ÕÒ£¬±ÈÈ磺 Closest Pucker Descriptor: Envelope on C(5)£¬ÁùÔª»·Ò»°ã»¹ÊÇÄ¿²â£¡ |
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Q(2) = 0.360(2) Ang., Phi(2) = 157.0(4) Deg Q(3) = -0.339(3) Ang. Puckering Amplitude (Q) = 0.494(2) Ang, Theta = 133.3(3) Deg, Phi = 157.0(4) Deg *** NOTE *** - A Change of the Absolute Configuration Transforms Theta into 180 - Theta and Phi into 180 + Phi. - A Cyclic Forward Shift of the Pivot Atom from At1 to At2 Transforms Theta into 180 - Theta and Phi into Phi + 120. - A Change of the Sense Transforms Theta into 180 - Theta and Phi into 180 - Phi, and Vice Versa. Conformational Analysis (G.G. Evans & J.A. Boeyens, Acta Cryst. (1989), B45, 581-590) Coefficients of Primitive and Normalised Forms M Primitive Coefficient Angular Value ------------------------------------------- CosForm 2 0.088 0.124 12.0 SinForm 0.281 0.398 10.0 3 0.479 -1.0 Analysis of Ring Substituents ============================= Bond Distance Angle with C&P Plane Normal --------------------------------------------------------------- C(10) - C(9) 1.360(4) 87.21(19) Eq N(2) - N(1) 1.363(3) 84.57(15) Eq C(12) - C(14) 1.508(4) 75.55(18) Eq Îҵľ§ÌåÖÐÒ»¸öÁùÔª»·¸ø³öµÄÐÅÏ¢£¬ÕâЩ¶¼ÊÇʲôÒâ˼£¿ |
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