Reactivity of [M(CO)4(nbd)] (M = Cr or Mo; nbd = norbornadiene) toward (Ph2PN)C(Ph)[N(SiMe3)2] and C6H4{C[N(SiMe3)2]-(NPPh 2)}2-1,4

Rick W K WONG; Chaode Sun; Tao Jiang; Wing Tak Wong; Feng Xue; Thomas C.W. Mak

doi:10.1039/a607373e

Reactivity of [M(CO)₄(nbd)] (M = Cr or Mo; nbd = norbornadiene) toward (Ph₂PN)C(Ph)[N(SiMe₃)₂] and C₆H₄{C[N(SiMe₃)₂]-(NPPh ₂)}₂-1,4

Rick W K WONG^*, Chaode Sun, Tao Jiang, Wing Tak Wong, Feng Xue, Thomas C.W. Mak

^*Corresponding author for this work

Department of Chemistry

Research output: Contribution to journal › Journal article › peer-review

9 Citations (Scopus)

Abstract

The interaction of (Ph₂PN)C(Ph)[N(SiMe₃)₂] with 1 equivalent of [M(CO)₄(nbd)] (M = Cr or Mo, nbd = norbornadiene) in diethyl ether gave cis-[M(CO)₄{(Me₃SiN)C(Ph)(NHPPh₂}] (M = Cr 1 or Mo 2) in good yield. The interaction of C₆H₄{C(NPPh₂)[N(SiMe₃) ₂]}₂-1,4 with 2 equivalents of [M(CO)₄(nbd)] (M = Cr or Mo) in tetrahydrofuran gave the symmetric dimer cis-[{M(CO)₄} {(Ph₂PNH)(Me₃SiN)CC₆H₄C(NSiMe ₃)(NHPPh₂)}] (M = Cr 3 or Mo 4) in moderate yield. However, in diethyl ether, this reaction (M = Mo) gave the unsymmetric cis-[(OC)₄Mo{(Ph₂PNH)(Me₃SiN)CC ₆H₄C[N(SiMe₃)₂](NPPh ₂)}Mo(CO)₅] 5 in moderate yield. Compounds 1-5 have been fully characterized by analytical and spectroscopic methods and the structures of 3 and 5 have been established by X-ray crystallography. A 1,3-silyl shift mechanism has been proposed for the formation of the products. The NH proton of the bidentate iminophosphine ligand undergoes facile deuterium exchange with D₂O at ambient temperature.

Original language	English
Pages (from-to)	693-698
Number of pages	6
Journal	Journal of the Chemical Society. Dalton Transactions
Issue number	4
DOIs	https://doi.org/10.1039/a607373e
Publication status	Published - 21 Feb 1997

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@article{7a92bd8fd1c44cf590c09ed22b89fc6e,

title = "Reactivity of [M(CO)4(nbd)] (M = Cr or Mo; nbd = norbornadiene) toward (Ph2PN)C(Ph)[N(SiMe3)2] and C6H4{C[N(SiMe3)2]-(NPPh 2)}2-1,4",

abstract = "The interaction of (Ph2PN)C(Ph)[N(SiMe3)2] with 1 equivalent of [M(CO)4(nbd)] (M = Cr or Mo, nbd = norbornadiene) in diethyl ether gave cis-[M(CO)4{(Me3SiN)C(Ph)(NHPPh2}] (M = Cr 1 or Mo 2) in good yield. The interaction of C6H4{C(NPPh2)[N(SiMe3) 2]}2-1,4 with 2 equivalents of [M(CO)4(nbd)] (M = Cr or Mo) in tetrahydrofuran gave the symmetric dimer cis-[{M(CO)4} {(Ph2PNH)(Me3SiN)CC6H4C(NSiMe 3)(NHPPh2)}] (M = Cr 3 or Mo 4) in moderate yield. However, in diethyl ether, this reaction (M = Mo) gave the unsymmetric cis-[(OC)4Mo{(Ph2PNH)(Me3SiN)CC 6H4C[N(SiMe3)2](NPPh 2)}Mo(CO)5] 5 in moderate yield. Compounds 1-5 have been fully characterized by analytical and spectroscopic methods and the structures of 3 and 5 have been established by X-ray crystallography. A 1,3-silyl shift mechanism has been proposed for the formation of the products. The NH proton of the bidentate iminophosphine ligand undergoes facile deuterium exchange with D2O at ambient temperature.",

author = "WONG, {Rick W K} and Chaode Sun and Tao Jiang and Wong, {Wing Tak} and Feng Xue and Mak, {Thomas C.W.}",

year = "1997",

month = feb,

day = "21",

doi = "10.1039/a607373e",

language = "English",

pages = "693--698",

journal = "Journal of the Chemical Society. Dalton Transactions",

issn = "0300-9246",

publisher = "Royal Society of Chemistry",

number = "4",

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TY - JOUR

T1 - Reactivity of [M(CO)4(nbd)] (M = Cr or Mo; nbd = norbornadiene) toward (Ph2PN)C(Ph)[N(SiMe3)2] and C6H4{C[N(SiMe3)2]-(NPPh 2)}2-1,4

AU - WONG, Rick W K

AU - Sun, Chaode

AU - Jiang, Tao

AU - Wong, Wing Tak

AU - Xue, Feng

AU - Mak, Thomas C.W.

PY - 1997/2/21

Y1 - 1997/2/21

N2 - The interaction of (Ph2PN)C(Ph)[N(SiMe3)2] with 1 equivalent of [M(CO)4(nbd)] (M = Cr or Mo, nbd = norbornadiene) in diethyl ether gave cis-[M(CO)4{(Me3SiN)C(Ph)(NHPPh2}] (M = Cr 1 or Mo 2) in good yield. The interaction of C6H4{C(NPPh2)[N(SiMe3) 2]}2-1,4 with 2 equivalents of [M(CO)4(nbd)] (M = Cr or Mo) in tetrahydrofuran gave the symmetric dimer cis-[{M(CO)4} {(Ph2PNH)(Me3SiN)CC6H4C(NSiMe 3)(NHPPh2)}] (M = Cr 3 or Mo 4) in moderate yield. However, in diethyl ether, this reaction (M = Mo) gave the unsymmetric cis-[(OC)4Mo{(Ph2PNH)(Me3SiN)CC 6H4C[N(SiMe3)2](NPPh 2)}Mo(CO)5] 5 in moderate yield. Compounds 1-5 have been fully characterized by analytical and spectroscopic methods and the structures of 3 and 5 have been established by X-ray crystallography. A 1,3-silyl shift mechanism has been proposed for the formation of the products. The NH proton of the bidentate iminophosphine ligand undergoes facile deuterium exchange with D2O at ambient temperature.

AB - The interaction of (Ph2PN)C(Ph)[N(SiMe3)2] with 1 equivalent of [M(CO)4(nbd)] (M = Cr or Mo, nbd = norbornadiene) in diethyl ether gave cis-[M(CO)4{(Me3SiN)C(Ph)(NHPPh2}] (M = Cr 1 or Mo 2) in good yield. The interaction of C6H4{C(NPPh2)[N(SiMe3) 2]}2-1,4 with 2 equivalents of [M(CO)4(nbd)] (M = Cr or Mo) in tetrahydrofuran gave the symmetric dimer cis-[{M(CO)4} {(Ph2PNH)(Me3SiN)CC6H4C(NSiMe 3)(NHPPh2)}] (M = Cr 3 or Mo 4) in moderate yield. However, in diethyl ether, this reaction (M = Mo) gave the unsymmetric cis-[(OC)4Mo{(Ph2PNH)(Me3SiN)CC 6H4C[N(SiMe3)2](NPPh 2)}Mo(CO)5] 5 in moderate yield. Compounds 1-5 have been fully characterized by analytical and spectroscopic methods and the structures of 3 and 5 have been established by X-ray crystallography. A 1,3-silyl shift mechanism has been proposed for the formation of the products. The NH proton of the bidentate iminophosphine ligand undergoes facile deuterium exchange with D2O at ambient temperature.

UR - http://www.scopus.com/inward/record.url?scp=33748511215&partnerID=8YFLogxK

U2 - 10.1039/a607373e

DO - 10.1039/a607373e

M3 - Journal article

AN - SCOPUS:33748511215

SN - 0300-9246

SP - 693

EP - 698

JO - Journal of the Chemical Society. Dalton Transactions

JF - Journal of the Chemical Society. Dalton Transactions

IS - 4

ER -

Reactivity of [M(CO)₄(nbd)] (M = Cr or Mo; nbd = norbornadiene) toward (Ph₂PN)C(Ph)[N(SiMe₃)₂] and C₆H₄{C[N(SiMe₃)₂]-(NPPh ₂)}₂-1,4

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