Induction of Carbonyl-Carbyne Coupling by Chelating Schiff Base Ligands: Crystal and Molecular Structure of Carbonyl(methoxyphenylacetyiene)-bis(pyrrole-2-carboxaldehyde methyliminato)tungsten

Andreas Mayr; Gregory A. Mcdermott; Alison M. Dorries; Donna van Engen

doi:10.1021/om00150a023

Induction of Carbonyl-Carbyne Coupling by Chelating Schiff Base Ligands: Crystal and Molecular Structure of Carbonyl(methoxyphenylacetyiene)-bis(pyrrole-2-carboxaldehyde methyliminato)tungsten

Andreas Mayr
, Gregory A. Mcdermott
, Alison M. Dorries
, Donna van Engen

Chemistry

Princeton University

Research output: Contribution to journal › Article › peer-review

25 Scopus citations

Abstract

Reaction of the tungsten carbyne complexes [(W=CR)Cl(CO)₂(py)₂] (la, R = C₆H₅; lb, R = CH₃) with pyrrole-2-carboxaldehyde methylimine (C₆H₈N₂)/KOH in THF followed by metathesis with NEt₄Cl in CH₂C1₂gives the anionic tungsten ketenyl complexes [NEt₄][W(C₆H₇N₂)₂(RCCO)(CO)] (3a, R = C₆H₅; 3b, R = CH₃). Alkylation of 3 with methyl fluorosulfate provides the neutral tungsten alkoxyacetylene complexes W(C₆H₇N₂)₂(RC=COCH₃)(CO) (4a, R = C₆H₅; 4b, R = CH₃). The molecular structure of 4a has been determined by X-ray crystallography: space group P2₁/n, a = 9.568 (2) A, b = 20.884 (4) A, c = 10.597 (2) A, β = 98.25 (2)°, Z = 4, R = 2.8%, R_w= 2.4%.

Original language	English
Pages (from-to)	1503-1508
Number of pages	6
Journal	Organometallics
Volume	6
Issue number	7
DOIs	https://doi.org/10.1021/om00150a023
State	Published - Jul 1 1987

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@article{637ed463759a4261af1901d2a6304b30,

title = "Induction of Carbonyl-Carbyne Coupling by Chelating Schiff Base Ligands: Crystal and Molecular Structure of Carbonyl(methoxyphenylacetyiene)-bis(pyrrole-2-carboxaldehyde methyliminato)tungsten",

abstract = "Reaction of the tungsten carbyne complexes [(W=CR)Cl(CO)2(py)2] (la, R = C6H5; lb, R = CH3) with pyrrole-2-carboxaldehyde methylimine (C6H8N2)/KOH in THF followed by metathesis with NEt4Cl in CH2C12gives the anionic tungsten ketenyl complexes [NEt4][W(C6H7N2)2(RCCO)(CO)] (3a, R = C6H5; 3b, R = CH3). Alkylation of 3 with methyl fluorosulfate provides the neutral tungsten alkoxyacetylene complexes W(C6H7N2)2(RC=COCH3)(CO) (4a, R = C6H5; 4b, R = CH3). The molecular structure of 4a has been determined by X-ray crystallography: space group P21/n, a = 9.568 (2) A, b = 20.884 (4) A, c = 10.597 (2) A, β = 98.25 (2)°, Z = 4, R = 2.8\%, Rw= 2.4\%.",

author = "Andreas Mayr and Mcdermott, \{Gregory A.\} and Dorries, \{Alison M.\} and \{van Engen\}, Donna",

year = "1987",

month = jul,

day = "1",

doi = "10.1021/om00150a023",

language = "English",

volume = "6",

pages = "1503--1508",

journal = "Organometallics",

issn = "0276-7333",

number = "7",

}

Induction of Carbonyl-Carbyne Coupling by Chelating Schiff Base Ligands: Crystal and Molecular Structure of Carbonyl(methoxyphenylacetyiene)-bis(pyrrole-2-carboxaldehyde methyliminato)tungsten. / Mayr, Andreas; Mcdermott, Gregory A.; Dorries, Alison M. et al.
In: Organometallics, Vol. 6, No. 7, 01.07.1987, p. 1503-1508.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Induction of Carbonyl-Carbyne Coupling by Chelating Schiff Base Ligands

T2 - Crystal and Molecular Structure of Carbonyl(methoxyphenylacetyiene)-bis(pyrrole-2-carboxaldehyde methyliminato)tungsten

AU - Mayr, Andreas

AU - Mcdermott, Gregory A.

AU - Dorries, Alison M.

AU - van Engen, Donna

PY - 1987/7/1

Y1 - 1987/7/1

N2 - Reaction of the tungsten carbyne complexes [(W=CR)Cl(CO)2(py)2] (la, R = C6H5; lb, R = CH3) with pyrrole-2-carboxaldehyde methylimine (C6H8N2)/KOH in THF followed by metathesis with NEt4Cl in CH2C12gives the anionic tungsten ketenyl complexes [NEt4][W(C6H7N2)2(RCCO)(CO)] (3a, R = C6H5; 3b, R = CH3). Alkylation of 3 with methyl fluorosulfate provides the neutral tungsten alkoxyacetylene complexes W(C6H7N2)2(RC=COCH3)(CO) (4a, R = C6H5; 4b, R = CH3). The molecular structure of 4a has been determined by X-ray crystallography: space group P21/n, a = 9.568 (2) A, b = 20.884 (4) A, c = 10.597 (2) A, β = 98.25 (2)°, Z = 4, R = 2.8%, Rw= 2.4%.

AB - Reaction of the tungsten carbyne complexes [(W=CR)Cl(CO)2(py)2] (la, R = C6H5; lb, R = CH3) with pyrrole-2-carboxaldehyde methylimine (C6H8N2)/KOH in THF followed by metathesis with NEt4Cl in CH2C12gives the anionic tungsten ketenyl complexes [NEt4][W(C6H7N2)2(RCCO)(CO)] (3a, R = C6H5; 3b, R = CH3). Alkylation of 3 with methyl fluorosulfate provides the neutral tungsten alkoxyacetylene complexes W(C6H7N2)2(RC=COCH3)(CO) (4a, R = C6H5; 4b, R = CH3). The molecular structure of 4a has been determined by X-ray crystallography: space group P21/n, a = 9.568 (2) A, b = 20.884 (4) A, c = 10.597 (2) A, β = 98.25 (2)°, Z = 4, R = 2.8%, Rw= 2.4%.

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U2 - 10.1021/om00150a023

DO - 10.1021/om00150a023

M3 - Article

AN - SCOPUS:0000542392

SN - 0276-7333

VL - 6

SP - 1503

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JO - Organometallics

JF - Organometallics

IS - 7

ER -

Induction of Carbonyl-Carbyne Coupling by Chelating Schiff Base Ligands: Crystal and Molecular Structure of Carbonyl(methoxyphenylacetyiene)-bis(pyrrole-2-carboxaldehyde methyliminato)tungsten

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