TY - JOUR
T1 - The synthesis, structure and lewis acidity of bidentate organotin alkanes and carboxylates
AU - Yoder, Claude H.
AU - Mihalick, Jennifer E.
AU - Kowalski, Wendy J.
AU - Ealy, Julie B.
AU - Spencer, James N.
N1 - Funding Information:
The authors are indebted to the Hackman Scholar program, the Merck & Company Inc. Foundation's Undergraduate Science Research Program, the Elizabethtown College Faculty Grants Committee, the Millersville University
Funding Information:
Grants Program, the Camille and Henry Dreyfus Foundation Scholar/Fellow Program for Undergraduate Insitutions, the National Science Foundation, and the Petroleum Research Fund, administered by the American Chemical Society, for support of this work. We are grateful to the Council on Undergraduate Research and Pfizer Inc. for an AIURP summer fellowship (J.L.G.). We thank the National Science Foundation, Armstrong World Industries, and Franklin & Marshall College for assistance in acquiring a Varian UNITY 300-MHz NMR spectrometer and facilities. The authors are also indebted to Beth Buckwalter for NMR support.
PY - 1995/1
Y1 - 1995/1
N2 - A series of bis(diphenylbromostannyl)alkanes of the type (C6H5)2BrSn(CH2)nSnBr(C6H5)2, where n = 6, 10 and 12, and a series of bis(tributylstannyl)carboxylates of the type (n-C4H9)3SnO2C(CH2)nCO2Sn(n-C4H9)3, where n = 2, 6, 10, 12 and 14, were prepared. Tin-119 solid state NMR of the carboxylates indicated that the compounds contain five-coordinate, structurally-equivalent tins in the solid state. Adduct formation with triethylphosphine oxide (TEPO) for both the alkanes and carboxylates was monitored by phosphorus-31 NMR. Equilibrium constants for the alkanes were approximately independent of chain length from n = 6 to 12, while for the carboxylates, the constants for n = 2 and n = 14 were small. Equilibrium constants for the intermediate chains were approximately the same. Solid state NMR shows that the 1:1 TEPO adduct of the n = 12 carboxylate contains two different tin atoms, both of which are five-coordinate, and that the adduct is probably not symmetrically chelated.
AB - A series of bis(diphenylbromostannyl)alkanes of the type (C6H5)2BrSn(CH2)nSnBr(C6H5)2, where n = 6, 10 and 12, and a series of bis(tributylstannyl)carboxylates of the type (n-C4H9)3SnO2C(CH2)nCO2Sn(n-C4H9)3, where n = 2, 6, 10, 12 and 14, were prepared. Tin-119 solid state NMR of the carboxylates indicated that the compounds contain five-coordinate, structurally-equivalent tins in the solid state. Adduct formation with triethylphosphine oxide (TEPO) for both the alkanes and carboxylates was monitored by phosphorus-31 NMR. Equilibrium constants for the alkanes were approximately independent of chain length from n = 6 to 12, while for the carboxylates, the constants for n = 2 and n = 14 were small. Equilibrium constants for the intermediate chains were approximately the same. Solid state NMR shows that the 1:1 TEPO adduct of the n = 12 carboxylate contains two different tin atoms, both of which are five-coordinate, and that the adduct is probably not symmetrically chelated.
UR - http://www.scopus.com/inward/record.url?scp=21844492777&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=21844492777&partnerID=8YFLogxK
U2 - 10.1515/MGMC.1995.18.1.43
DO - 10.1515/MGMC.1995.18.1.43
M3 - Article
AN - SCOPUS:21844492777
SN - 0792-1241
VL - 18
SP - 43
EP - 50
JO - Main Group Metal Chemistry
JF - Main Group Metal Chemistry
IS - 1
ER -