X-RAY DIFFRACTION STUDY ON CHITOSAN-METAL COMPLEXES

Addition of cis-cyclooctene (coe) to K2PtCl4 gives trans-[PtCl2(coe)]2 (1), which reacts with excess coe to give trans-PtCl2(coe)2 (2). Compound 2 was characterized by an X-ray diffraction study and crystals were found to be triclinic, a = 5.7838(5), b = 7.4347(6), c = 9.9972(9) Å, α = 83.924(1), β = 87.844(2), γ = 73.546(1)°, Z = 1, with space group P1-. Addition of 4-vinylpyridine (4vp) to 1 gave trans-PtCl2(4vp)2 (5) which was also characterized by an X-ray diffraction study. Crystals of 5 were monoclinic, a = 8.2255(6), b = 12.8254(10), c = 6.9624(5) Å, β = 98.8230(10)°, Z = 2, with space group P21/c. Although alkenylamines react with 1 to give a mixture of products, addition of one equivalent of apve (H2NCH2CH2CH2OCHβCH2) to 1 cleanly afforded the organometallic product trans-PtCl2(coe)(thmo) (thmo = tetrahydro-2-methyl-1,3-oxazine) arising from a metal-catalyzed intramolecular hydroamination of the starting alkenylamine. Initial investigations into the functionalization of metal complexes containing pendant alkene groups have shown that catecholborane can be added in some cases, using a rhodium catalyst, to give the corresponding organoboronate ester platinum compounds.Key words: alkenylamines, alkenylpyridines, hydroamination, hydroboration, platinum.

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X-ray diffraction study of bisphosphonate metal complexes: Mg and Ca complexes of (dichloromethylene)bisphosphonic acid P,P′-diisopropyl ester

Polyhedron ◽

10.1016/j.poly.2004.11.006 ◽

2005 ◽

Vol 24 (2) ◽

pp. 305-309 ◽

Cited By ~ 24

Author(s):

Mervi Kontturi ◽

Sirpa Peräniemi ◽

Jouko J. Vepsäläinen ◽

Markku Ahlgrén

Keyword(s):

Metal Complexes ◽

Diffraction Study ◽

X Ray Diffraction ◽

X Ray ◽

Bisphosphonic Acid

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Unsaturated mixed-metal complexes: syntheses of (.eta.-C5Me5)Ni-M(CO)3(.eta.-C5H5) (M = Mo, W) and x-ray diffraction study of (.eta.-C5Me5)Ni-W(CO)3(.eta.-C5H4Me)

Organometallics ◽

10.1021/om00118a080 ◽

1990 ◽

Vol 9 (4) ◽

pp. 1343-1345 ◽

Cited By ~ 9

Author(s):

Michael J. Chetcuti ◽

Brian E. Grant ◽

Phillip E. Fanwick ◽

Margaret J. Geselbracht ◽

Angelica M. Stacy

Keyword(s):

Metal Complexes ◽

Diffraction Study ◽

X Ray Diffraction ◽

X Ray ◽

Mixed Metal ◽

Mixed Metal Complexes

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Synthesis and hydroboration of lipophilic hydroxy-pyridinones and their complexes with molybdenum(VI)

Australian Journal of Chemistry ◽

10.1071/ch00094 ◽

2000 ◽

Vol 53 (8) ◽

pp. 693 ◽

Cited By ~ 6

Author(s):

M. Karen J. Gagnon ◽

Timothy R. St. Germain ◽

Christopher M. Vogels ◽

Robert A. McNamara ◽

Nicholas J. Taylor ◽

...

Keyword(s):

Metal Complexes ◽

Diffraction Study ◽

Vinyl Ether ◽

Unsaturated Hydrocarbon ◽

X Ray Diffraction ◽

Space Group ◽

X Ray ◽

Ether Derivative ◽

Hydroxy Groups

We have prepared four potentially lipophilic N-substituted hydroxypyridinones containing unsaturated hydrocarbon groups. The propyl vinyl ether derivative (3) has been characterized by an X-ray diffraction study. Complexes of the type cis-MoO2L2, where L represents the hydroxypyridinonato ligands, have also been prepared. The pyridinone ligands are bound to molybdenum in a cis bidentate fashion via the deprotonated hydroxy groups and the ketone moieties. Initial investigations into the hydroboration of the alkene groups in the pyridinone ligands and corresponding metal complexes is presented. Crystals of (3) are monoclinic, with a 10.466(1), b 13.388(1), c 15.386(2) Å, β 102.343(8)˚, Z 8, space group P21/n.

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ChemInform Abstract: REACTIVITY OF FUNCTIONALIZED HALO-DERIVATIVES WITH TRANSITION METAL COMPLEXES. SYNTHESIS AND X-RAY DIFFRACTION STUDY OF (PH3P(CH2CH2COCH3))+(PDCL3(PPH3)) OBTAINED BY REACTION OF TRANS-(PDCL2(PPH3)2) WITH CH3COCH2CH2CL

Chemischer Informationsdienst ◽

10.1002/chin.198404280 ◽

1984 ◽

Vol 15 (4) ◽

Author(s):

R. BARDI ◽

A. M. PIAZZESI ◽

A. DEL PRA ◽

G. CAVINATO ◽

L. TONIOLO

Keyword(s):

Transition Metal ◽

Metal Complexes ◽

Diffraction Study ◽

Transition Metal Complexes ◽

X Ray Diffraction ◽

X Ray

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Darstellung neuer Monofluorphosphine und einiger ihrer Übergangsmetallkomplexe; Einkristall-Röntgenstrukturanalyse eines Platin(II)-Komplexes / Preparation of New Monofluorophosphines and Some of their Transition Metal Complexes; Single Crystal X-Ray Diffraction Study of a Platinum(II) Complex

Zeitschrift für Naturforschung B ◽

10.1515/znb-1993-0704 ◽

1993 ◽

Vol 48 (7) ◽

pp. 875-885 ◽

Cited By ~ 8

Author(s):

Thomas G. Meyer ◽

Peter G. Jones ◽

Reinhard Schmutzler

Keyword(s):

Transition Metal ◽

Metal Complexes ◽

Single Crystal ◽

Diffraction Study ◽

Structure Analysis ◽

Transition Metal Complexes ◽

Classical Method ◽

X Ray Diffraction ◽

X Ray

The reaction of lithiated precursors with PCl2F led to a number of monofluorophosphines, including the known di-tert-butylmonofluorophosphine, 1. Bis(phenylethinyl)monofluorophosphine (2) was accessible only via this route (the classical method of synthesizing 2 by chlorine/fluorine exchange is impossible, because the corresponding chlorophosphine is unknown). Bis(2-methoxyphenyl)fluorophosphine (5) was prepared via the organolithium/PCl2F route. The NMR results for 5 thus prepared were inconsistent with previous reports, implying that the previously reported synthesis of 5 is in error. From 5 a cis-dichloroplatinum(II) complex (6) was synthesized and subjected to a single crystal X-ray structure analysis, confirming the expected planar coordination. From bis(2,3-dimethoxynaphthyl)monofluorophosphine (7) a rhodium(I) (8) and an iron(0)tetracarbonyl complex (9) were prepared. An iron(0)tetracarbonyl complex (11) was synthesized from bis(9-anthryl)monofluorophosphine (10) which was found to be stable to redox disproportionation.

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