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STRUCTURAL EFFECTS IN SOLVOLYTIC REACTIONS .34. C-13 NMR-STUDIES OF CARBOCATIONS .4. EFFECT OF INCREASING ELECTRON DEMAND ON THE C-13 NMR SHIFTS IN SUBSTITUTED TERT-CUMYL AND 1-ARYL-1-CYCLOPENTYL CARBOCATIONS - CORRELATION OF THE DATA BY A NEW SET OF SUBSTITUENT CONSTANTS, SIGMA-C+
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STRUCTURAL EFFECTS IN SOLVOLYTIC REACTIONS .37. EFFECT OF INCREASING ELECTRON DEMAND ON C-13 NUCLEAR MAGNETIC-RESONANCE SHIFTS IN THE 9-ARYL-EXO-5,6-TRIMETHYLENE AND 9-ARYL-ENDO-5,6-TRIMETHYLENE-9-NORBORNYL CARBOCATIONS - EFFECT OF THE CATIONIC CARBON CENTER ON REMOTE CARBON-ATOMS IN THE SKELETON AS REVEALED BY INCREASING ELECTRON DEMANDAR
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C-13 NUCLEAR MAGNETIC-RESONANCE STUDIES OF CARBOCATIONS .5. EFFECT OF INCREASING ELECTRON DEMAND ON THE C-13 CHEMICAL-SHIFTS OF 3-ARYL-3-PENTYL AND 2-ARYL-2-ADAMANTYL CARBOCATIONS - CORRELATION OF DELTA-DELTA-C+ WITH ENHANCED SUBSTITUENT CONSTANTS SIGMA-C+
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STABLE CARBOCATIONS .206. ONSET OF SIGMA-DELOCALIZATION IN SUBSTITUTED 2-PHENYL-2-NORBORNYL CATIONS AS STUDIES BY C-13 NUCLEAR MAGNETIC-RESONANCE SPECTROSCOPY - APPLICATION OF TOOL-OF-INCREASING-ELECTRON-DEMAND TO 2-NORBORNYL SYSTEM
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