ChemInform Abstract: 195Pt(1H) and 31P(1H) NMR Investigation of the Platinum(0)-Tetraphosphine Complexes Pt(CH3C(CH2PPh2)3)PR3.doi:10.1002/chin.198833295organo-platinum compoundsmagnetic resonance, nuclear quadrupole resonance (organic substances)L. M. GREEN...
13—丙基—5,6—二羟基异香豆素的一种合成路线如图:已知:Ⅰ.;Ⅱ.Ph3PPh为苯基,Bu为CH3CH2CH2CH2—,t—Bu为(CH3)3C—,R1～R4为烃基或H(1)A中含氧官能团的名称为___和___。(2)E→F的反应类型为__。(3)D的分子式为C14H18O4,写出其结构简式:___。(4)C的一种同分异构体同时满足下列条件,写出...
Crystal and molecular structure of [OC-6-22]-[Co{(RP*,RP*,RP*)-CH3C(CH2PPhC6H4NH2-2)3}](... The first structurally authenticated example of a hexadentate chelating tertiary phosphine in which all six donors are bound to a single metal centre is de... J Bennett,RJ Doyle,G Salem,...
(CH2PPhBz)3Mo(CO)3(1),(RRR/SSS)-CH3C(CH2-PPhBz)3Mo(CO)3(2),and(RRR/SSS)-CH3C[CH2P(m-Xyl)-isshownthatthepredictionsmadebyapplyingthisBoltzmannweightedforcefieldapproacharehighlyBz]3Mo(CO)3(3),leadstoexperimentalvaluesforanumberofintramolecularH···Hcontactsineachcase.Bytheverysignificant...
The conformations adopted by compounds CH3C(CH2PPh2)3–n[CH2P(oTol)2]nMo(CO)3 (n = 1: 1, n = 2: 2, n = 3: 3) will thus be largely determined by the repulsive forces acting in these molecules. The steric demand of the o-tolyl groups impedes their free rotation and enantiom...
Starting from MoCl5 via the intermediates (MeCN)2MoCl4 (1) and (THF)2MoCl4 (2) the tripod complex CH3C(CH2PPh2)3MoCl3 (4) has been synthesized. The yellow cristalline compound 4 has been fully characterized by standard analytical techniques. X-ray-analysis proves the facial coordination ...
The novel complex [(CH3C(CH2PPh2)(3))Rh(CH3C(CH2S)(3))].0.5THF containing the related tripod ligands CH3C(CH2PPh2)(3) (triphos) and CH3C(CH2S)(3)(3-) (trithiol) has been prepared and its molecular structure has been determined by single crystal X-ray analysis. Space group P2(1...
ChemInform Abstract: SYNTHESIS AND STRUCTURE (((CH3C(CH2PPH2)3)I BRP3)3CU5BR4)CUBR2: A 21‐ATOM MIXED IRIDIUM/COPPER/PHOSPHORUS/BROMINE CLUSTERorgano‐iridium compoundsNois available for this article.doi:10.1002/chin.198345314F. CECCONIC. A. GHILARDI...
The conformations adopted by compounds CH 3 C(CH 2 PPh 2 ) 3– n [CH 2 P( o Tol) 2 ] n Mo(CO) 3 ( n = 1: 1 , n = 2: 2 , n = 3: 3 ) will thus be largely determined by the repulsive forces acting in these molecules. The steric demand of the o -tolyl groups ...
本文从结构化学角度,阐述了标题化合物的EI质谱断裂行为.这些化合物的分子离子基本上按分步断裂分别失去羰基,直至获得[CH3CCo3(PPh2CH2PPh2)]+和[CH3CCo3]+.然后,这些残基和含膦配体继续断裂,失去Ph,PhP,Ph3P,C7H7,C6H6,C2H2,H2和Co等,生成各种相应的三核,二核和单核钴的碎片离子.蔡元坝...