
																
																	Conformational behaviors of 1,7-dioxa-spiro[5,5]undecane and its dithia and diselena analogs in relation to the anomeric effect: A hybrid-DFT, ab initio MO study and NBO interpretation
																
																
																
															Keywords: اثرات آنومری; Anomeric effects; NBO; Molecular modeling; 1,7-Dioxa-spiro[5,5]undecane;