Experiments were performed to determine the source(s) of ethylene-causing epinasty in flooded tomato plants (Lycopersicon esculentum Mill.). Simultaneous measurements were made of ethylene synthesized by the roots and shoots of tomato plants exposed to either aerobic or anaerobic atmospheres in the root zone. When the root zone was made anaerobic by a flowing stream of N(2) gas, petiole epinast...

An amidinato-phosphino ligand ArN[double bond, length as m-dash]C(R)NH(o-Ph2PC6H4) (Ar = 2,4,6-Me3C6H2, R = Ph (1); Ar = 2,6-iPr2C6H3, R = Ph (2); Ar = 2,6-iPr2C6H3, R = tBu (3)) was prepared. The ligand reacted with CrCl3(THF)3 to yield the N,P-chelation complex [ArNHC(R)[double bond, length as m-dash]N(o-Ph2PC6H4)]CrCl3(THF) (4-6), and the ligand's lithium salt ArN[double bond, length as m-da...

Since it was shown (2) that the treatment of casein with ethylene oxide could diminish the biological availability of the histidine and methionine of this protein, it became of interest to determine whether other proteins were affected in the same way and to elucidate the nature of the chemical reactions involved. Particular interest in such reactions derives from the use of ethylene oxide as a...

Cationic hydride complexes [R-N(1,2-CH(2)CH(2)N=PPh(3))(2)NiH][PF(6)] (R = H, Me) are prepared and shown to react with ethylene to produce NiEt complexes and with LiHBEt(3) in bromobenzene to produce NiPh complexes. These species are also thermolysed at 80 °C to orthometallate one of the phenyl groups of the N=PPh(3) substituents.

With the new chiral phosphine ligand DBUP, obtained from DBU and Ph(2)PCl, a remarkable anion effect was observed on the diastereoselective formation of the bischelated complexes [Ni(DBUP)(2)](X)(n) (X = Cl, Br, n = 2; X = NiCl(4), n = 1), which are active ethylene oligomerization catalyst precursors.

A controlled atmospheric-environment system (CAES) designed to sustain normal or hypobaric ambient growing conditions was developed, described, and evaluated for its effectiveness as a research tool capable of controlling ethylene-induced leaf senescence in intact plants of Phaseolus vulgaris L.Senescence was prematurely-induced in primary leaves by treatment with 30 parts per million ethephon....

Reactions of H2salen (H2L, N,N'-ethylene bis(salicylideneimine)) with Yb(CF3SO3)3, Yb(OAc)34H2O and Yb(NO3)36H2O in MeOH–EtOH under reflux gave NIR luminescent complexes [Yb6L9(H2L)2] (1), [Yb3L3(HL)(OH)2] (2) and [Yb2L2(H2L)2(NO3)(MeOH)2]NO3 (3), respectively.