ライフサイエンスコーパス: metallocene

1 at the heterotopic coordination sites of the metallocenes.

2 he presence of enantiopure C1-symmetric ansa metallocene, {1,2-(SiMe2)2(eta5-C5H-3,5-(CHMe2)2)(eta5-C

3 Olefin polymerization tests on metallocenes activated with the crystallized MAO show hi

4 silylamide, [Np{N(SiMe(3))(2)}(3)], and bent metallocenes, [An(C(5)Me(5))(2)(I)(THF)] (An = Np, Pu) c

5 ([COSAN](-)), have excelled their historical metallocene analogue label to become promising in drug d

6 iciencies approximately 10x greater than its metallocene analogue, ferrocene/ferrocenium.

7 ciated with the geometry differences between metallocene and [(eta(6)-fulvene)(eta(5)-cyclopentadieny

8 on-aqueous uranium chemistry mainly involved metallocene and classical alkyl, amide, or alkoxide comp

9 grams that are more than just the sum of the metallocene and the parent pz's.

10 the catalyst families of metallocenes, ansa-metallocenes, and hemi- and post-metallocenes, in cis-1,

11 t example of a structurally characterized 4d metallocene anion.

12 rsors, belonging to the catalyst families of metallocenes, ansa-metallocenes, and hemi- and post-meta

13 Single-molecule circuits with group 8 metallocenes are formed without additional linker groups

14 e variety of 1,3-disubstituted planar chiral metallocenes are prepared with high enantioselectivity (

15 entadienyl ligands together in strained ansa metallocenes are rare and limited to carbon-carbon doubl

16 ntation in a large number of autofluorescent metallocene-based catalyst particles.

17 In this study, 20 metallocene-based compounds comprising extensive structu

18 A general method for rapid construction of metallocene-based hosts is described.

19 The analogous linear Ca(II) metallocene [C(5)Me(4)(SiMe(2)(t)Bu)](2)Ca was synthesiz

20 SiMe(2)(CH(2)CH=CH(2))](-), forms unsolvated metallocenes, [(C(5)Me(4))SiMe(2)(CH(2)CH=CH(2))](2)Ln (

21 ethane (TMM) dianion complexes of lanthanide metallocenes, [(C5Me5)2Ln]2[mu-eta3:eta3-C(CH2)3] (Ln =

22 rovide access to unsolvated alkyl lanthanide metallocenes, [(C5Me5)2LnR]x, which display high C-H act

23 Reactions of these metallocenes can be divided into two major categories: (

24 The resulting metallocenes can be readily derivatized to yield planar

25 (MAO = methyl alumoxanes) is the most active metallocene catalyst for polypropylene reported to date.

26 in a silica nanotube reactor (SNTR) using a metallocene catalyst in conjunction with methylaluminoxa

27 nyl (Cp)-R(2)E(C,Si)-fluorenyl (Flu) group 4 metallocene catalyst systems examined-which varied in me

28 e destructive interaction of highly reactive metallocene catalysts with classical silica-based suppor

29 in contrast to traditional surface-supported metallocene catalysts.

30 MAO is the co-catalyst in metallocene catalytic systems, which are widely used in

31 Studies of metallocene-catalyzed alkene polymerization at room temp

32 Metallocene-catalyzed polymerization of 1-alkenes offers

33 g the activity and termination mechanisms of metallocene-catalyzed polymerizations.

34 ne (or styrene) and then to hydrogen, during metallocene-catalyzed propylene polymerization by rac-Me

35 report describes an unanticipated benefit of metallocene-catalyzed semicrystalline polyolefins, namel

36 The metallocene cation complex [Cp*2ZrCH3](+)[B(C6F5)4](-) i

37 Treatment of the metallocene cation complexes [Cp*2MCH3](+)[B(C6F5)4](-)

38 nnecting the tetraphenylborate anion and the metallocene cation.

39 representing an unprecedented coexistence of metallocene cations and anions in different oxidation st

40 tion of the bis(tetramethylcyclopentadienyl) metallocene chemistry of scandium has revealed that the

41 ne nearly 70 years ago marked the genesis of metallocene chemistry.

42 vity of this otherwise photochemically inert metallocene complex.

43 We report well-defined Ti(III) metallocene complexes Cp*(2)TiMe (1(Me)) and Cp*(2)TiH (

44 tautomerism on reactions of selected group 4 metallocene complexes will be discussed.

45 H(2) or phenylacetylene furnished isocyanato metallocene complexes with bridging imido (mu-NH) ligand

46 ) produces EPR signals assignable to Zr(III) metallocene complexes.

47 that diameter-selective encapsulation of two metallocene compounds bis(cyclopentadienyl) cobalt and b

48 Treatment of the scandium(II) metallocene Cp(ttt)(2)Sc (Cp(ttt) = C(5)H(2)(t)Bu(3)) wi

49 The bent d(0) titanium metallocene (Cp)(2)Ti(NCS)(2) exhibits an intense phosph

50 erties of the isocarbonyl-ligated dysprosium metallocene [Cp*2 Dy{mu-(OC)2 FeCp}]2 (1Dy ), which cont

51 The reactions of the divalent lanthanide metallocenes [Cp*2Ln(thf)2] (Cp* = eta(5)-C5Me5; Ln = Sm

52 ion of a chloride ligand from the dysprosium metallocene [(Cp(ttt) )2 DyCl] (1Dy Cp(ttt) =1,2,4-tri(t

53 voltammetry measurements on the scandium(II) metallocene, Cp(ttt)(2)Sc(II) (Cp(ttt) = C(5)H(2)(t)Bu(3

54 ties of a tetrazinyl radical-bridged Er(III) metallocene, [(Cp*(2)Er(III))(2)(bpytz(*-))][BPh(4)] (1;

55 ate polymerization with unbridged rare earth metallocenes (Cp2LnX) follows a complex reaction pathway

56 eduction of sodium azide with organometallic metallocene derivatives, [(C5Me4R)2U][(mu-Ph)2BPh2] (R =

57 working mechanism where a PCET step from the metallocene-derived mediator to Ni(II) generates Ni(III)

58 nsfer from a Ni(II)-H when interfaced with a metallocene-derived proton-coupled electron transfer (PC

59 Reduction of group 4 metallocene dichlorides with magnesium in the presence o

60 the N(2) ligand, the longest observed in any metallocene dinitrogen complex.

61 structures and to the inhomogeneities in the metallocene distribution.

62 tive dimerized stannylene or plumbylene gave metallocene ditetrylene complexes.

63 hronoamperometric response (I vs t) of three metallocene-doped metal-organic frameworks (MOFs) thin f

64 Further, sandwich metallocenes (e.g., ferrocene) and sandwich metallabis(d

65 nd ligand substitution pattern-cationic ansa-metallocene ester enolate catalyst 6(+)[B(C(6)F(5))(4)](

66 ) UI] (1) produced the cationic uranium(III) metallocene [(eta(5) -C(5) (i) Pr(5) )(2) U](+) (2) as a

67 Reduction of the uranium(III) metallocene [(eta(5) -C(5) (i) Pr(5) )(2) UI] (1) with p

68 -brown salts of the first entirely inorganic metallocene, [(eta5-P5)2Ti](2-)(1).

69 and a method for its conversion to the ansa-metallocene [ethylene(eta5-inden-1-yl)(eta5-inden-2-yl)]

70 d physical properties of divalent lanthanide metallocenes first, followed by an overview of the react

71 ich the cis-enediolate group bridges the two metallocene fragments.

72 or the formaldehyde dianion bridges the two metallocene fragments.

73 F)2 followed by hydrogenation of the product metallocene furnishes ansa-titanocene 4.

74 are known to stabilize three ligands in the metallocene girdle to form saturated (C(5)H(5))(2)ML(3)

75 Ethylene/propylene copolymerization with metallocenes having heterotopic active sites (R =Me, i-P

76 and polymerization data for new isospecific metallocenes (heterocenes) having cyclopentenyl ligands

77 Treatment of the bulky metallocene hydride Cp*2Zr(H)OMes (Cp* = pentamethylcycl

78 The reduction of a bimetallic yttrium ansa-metallocene hydride was examined to explore the possible

79 The reaction of the low valent metallocene(II) sources Cp'(2)Ti(eta(2)-Me(3)SiC(2)SiMe(

80 Complexes of Group 4 metallocenes in the +3 oxidation state and amidoborane o

81 As such, understanding the behavior of these metallocenes in the presence of acids is paramount.

82 cenes, ansa-metallocenes, and hemi- and post-metallocenes, in cis-1,4-polybutadiene (PB) degradation

83 Metallocenes, including their permethylated variants, ar

84 microbial resistance is the incorporation of metallocenes into drug scaffolds.

85 e of 2.2.2-cryptand, yields the green Sc(II) metallocene iodide complex, [K(crypt)][Cp"(2)ScI], 5, wh

86 identical withC-PPh2, with selected group 4 metallocenes is presented.

87 ta(5)-C(5)(i)Pr(5))(2)] and the uranium(III) metallocene [IU(eta(5)-C(5)(i)Pr(5))(2)] can be reduced

88 or blunt, suggesting distinct scenarios for metallocene junction formation and evolution.

89 tal composed of metal 4d orbitals mixed with metallocene ligand orbitals.

90 d with the bridge and the substituent on the metallocene ligand.

91 ium salt confirms its geometry and reveals a metallocene-like sandwich, with five Li(+) cations inter

92 ation of ethylene and propylene with bridged metallocenes Me(2)E(3-RCp)(Flu)X(2)/MAO (E = C, X = Me;

93 Recent research on the mechanochemistry of metallocene mechanophores has shed light on the force-re

94 epth, we utilized a Nd-doped LaOCl-supported metallocene model system.

95 This bent metallocene motif, not previously structurally authentic

96 hat is employed for the incorporation of the metallocenes, namely addition-elimination, condensation,

97 lectronic, and magnetic properties of double metallocene nanowires PnM(2) (Pn = C(8)H(6), M = V, Cr,

98 he most stable structure among the 1D double metallocene nanowires.

99 rates the first example of a neutral, linear metallocene of scandium analogous to ferrocene, namely [

100 ery in the early 1980s, the soluble divalent metallocenes of lanthanides have become a steadily growi

101 ncerning redox reactions revolves around the metallocenes of Sm and Yb.

102 y lower skew values (kappa << 1) as found in metallocene or bis-imido complexes.

103 re hitherto unknown for any transition metal metallocene or metallacarborane complex.

104 cumvented by using steric bulk either at the metallocene or with a donor ligand in the wedge.

105 zation of anti-infective drug scaffolds with metallocenes or for the de novo synthesis of original me

106 macrocyclic systems tethered to an integral metallocene platform.

107 Metallocenes possess potentially useful combinations of

108 ollides) display global aromaticity, whereas metallocenes present local aromaticity in the ligands.

109 p and bottom surfaces of the "barrel"-shaped metallocenes present the electron-rich pai system of cyc

110 Silicon-bridged metallocenes produce copolymers with higher activity and

111 are-earth triflates in methanol using a mild metallocene reductant, decamethylferrocene (Fc*).

112 DFT calculations on C5H5 model metallocenes show that the reaction of Cp2CeH with CO an

113 When activated with methylaluminoxane, these metallocenes show unprecedented activity for the polymer

114 A series of enantiopure C1-symmetric metallocenes, [(SiMe2)2[eta5-C5H(CHMe2)2][eta5-C5H2((S)-

115 Stereoblock polymerization with chiral ansa-metallocene/strong Lewis acid hybrid catalysts capable o

116 allographic study revealed that 1 has a bent metallocene structure, and theoretical studies and magne

117 This conformation complements the metallocene structures of rac-8a-e but would destabilize

118 The results of metallocene syntheses from other Zr amide precursors sup

119 gs are not limited to the present protonated metallocene system.

120 insight into the electronic structure of the metallocene-terminated allylium cations.

121 ene phosphine adducts yielded the respective metallocene tetrylene phosphine complexes.

122 ures an unusual example of an anionic Ln(3+) metallocene that supports short metal-ligand bonds and a

123 Like ferrocene and other carbon-based metallocenes, the structure of 1 has parallel and planar

124 ess resembles a transformation reaction from metallocene to living anionic polymerization.

125 re compared to those reported for lanthanide metallocenes to yield insight into the nature of-and fut

126 Here we show that the uranium(II) metallocene [U(eta(5)-C(5)(i)Pr(5))(2)] and the uranium(

127 presence of 2.2.2-cryptand to the uranium(I) metallocene [U(eta(5)-C(5)(i)Pr(5))(2)](-) (1) (C(5)(i)P

128 inert (eta(5)-C(5)Me(5))(1-) ligands in each metallocene unit to form a series of heteroleptic bimeta

129 zation catalyzed by a set of zirconium-based metallocenes was studied by NMR using dissolution dynami

130 ow changes in M-Cl orbital mixing within the metallocene wedge are correlated with periodic trends in

131 pivalonitrile at a lateral site at the bent metallocene wedge with retention of the Zr-P bond.

132 studies on Nd(II), Dy(II) and mainly Tm(II) metallocenes were published.

133 tactic PEPEP sequences were observed for all metallocenes, while the tacticities of the EPPE sequence

134 nd to synthesize the first bimetallic hetero-metallocene with lithium and scandium atoms embedded in

135 as synthesized by reaction of (2-lithiovinyl)metallocenes with formylmetallocenes, followed by treatm

136 ed, only bis-phthalocyaninato sandwiches and metallocenes, with rigid ligands, consistently present m