Can acyclic conformational control be achieved via a sulfur–fluorine gauche effect?

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Can acyclic conformational control be achieved via a sulfur-fluorine gauche effect?

The gauche conformation of the 1,2-difluoroethane motif is known to involve stabilising hyperconjugative interactions between donor (bonding, σC-H) and acceptor (antibonding, σ*C-F) orbitals. This model rationalises the generic conformational preference of F-Cβ-Cα-X systems (φFCCX ≈ 60°), where X is an electron deficient substituent containing a Period 2 atom. Little is known about the correspo...

متن کامل

Can acyclic conformational control be achieved via a sulfur–fluorine gauche effect?† †Electronic supplementary information (ESI) available. CCDC 1048074–1048078. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c5sc00871a

Organisch Chemisches Institut, and Excell Westfälische Wilhelms-Universität Münster E-mail: [email protected] Department of Chemistry and Biochemistry Charles E. Young Drive East, Los Angeles 90 edu Excellence Cluster EXC 1003, Cells in M Münster, Münster, Germany † Electronic supplementary information ( For ESI and crystallographic data in CI 10.1039/c5sc00871a ‡ X-ray crystallograp...

متن کامل

Laboratory quality control for all. Can this be achieved?

Visiting hospitals in Africa and meeting with clinicians, pathologists, and laboratory directors, it rapidly becomes apparent that confidence in any diagnostic services is lacking. Clinicians cite many reasons. Some days complete blood cell counts and chemistries are available, while on other days, because there are no reagents available, physicians have no results to guide treatment for their ...

متن کامل

Conformational analysis of 2,2-difluoroethylamine hydrochloride: double gauche effect

The gauche effect in fluorinated alkylammonium salts is well known and attributed either to an intramolecular hydrogen bond or to an electrostatic attraction between the positively charged nitrogen and the vicinal electronegative fluorine atom. This work reports the effect of adding a fluorine atom in 2-fluoroethylamine hydrochloride on the conformational isomerism of the resulting 2,2-difluoro...

متن کامل

Timing Attack: What Can Be Achieved by a Powerful Adversary?

Implementations of cryptographic algorithms often perform computations in non-constant time, due to performance optimizations. If such operations involve secret parameters, these timing variations can leak some information and, provided enough knowledge of the implementation is at hand, a careful statistical analysis could even lead to the total recovery of these secret parameters. This idea, d...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Chemical Science

سال: 2015

ISSN: 2041-6520,2041-6539

DOI: 10.1039/c5sc00871a