The pharmacological studies of calcium-N-n-butylmalonic acid-N, N′-diphenylhydrazide (B-64114-Ca)

MNDO Study of Nitrogen Atom Inversion in Piperazine, N,N'-Dimethylpiperazine and N,N'-Dichloropiperazine

MNDO semi-empirical SCF MO calculations are used to study the pyramidal nitrogen atom inversion and configurational equilibria in the title compounds.

A green and highly effective protocol for the synthesis of N,N′-alkylidene bisamides using saccharin-N-sulfonic acid

A green and highly effective solvent-free protocol has been reported for the synthesis of N,N′-alkylidene bisamides via the reaction of arylaldehydes (1 eq.) with primary amides (2 eq.) in the presence of saccharin-N-sulfonic acid (SaSA) as a solid-acid catalyst. The mentioned compounds have been obtained in high yields and short reaction times.

$n$-cocoherent rings‎, ‎$n$-cosemihereditary rings and $n$-V-rings

 Let $R$ be a ring‎, ‎and let $n‎, ‎d$ be non-negative integers‎. ‎A right $R$-module $M$ is called $(n‎, ‎d)$-projective if $Ext^{d+1}_R(M‎, ‎A)=0$ for every $n$-copresented right $R$-module $A$‎. ‎$R$ is called right $n$-cocoherent if every $n$-copresented right $R$-module is $(n+1)$-coprese-nted‎, ‎it is called a right co-$(n,d)$-ring if every right $R$-module is $(n‎, ‎d)$-projective‎. ‎$R$...

On the Rational Recursive Sequence X_{N+1}=ƔX_{N-K}+(AX_N+BX_{N-K})⁄(CX_N-DX_{N-K})

PREPARATION AND MOLECULAR STRUCTURE OF TRlS[(N, N, N\' , N\' - DIAMINE) L1TI-IIUMj TETRAMETHYLETHYLENE HEXAMETHYLSAMARATE(III), {[Li(TMEDA)b [Sm(CH3)6]}.THF

Inc Sm(1)(TIIFh reacts with mcthylllthlUm In TIIF In the prese nce of lclram c lhyt c lhy lcn c d lamln e, TMEDA , 10 gIve 1[1 .J(l ·MI :I)A)h[Sm«('I I)61}. J'IIF. Tl1c complex has been ch;lractcnzcd hy elemenl al analyses, lit spectrum and magnetic mcasurem ent . Molecular .lOd clymsl .SruClUrc of thl! complcx hoo been determmed by a sIngle cryst .. ! X - ray diffractIOn . The crystalS ar...